Prática de Shadowing: How bite marks made one man a murder suspect | Part 1 - Aprenda a falar inglês com vídeo
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At 6.45 in the morning of November 3rd, 1984, a man walked into a police station on the north side of Milwaukee to report
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that he'd found what appeared to be a body lying in a lot near his home.
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That's where police discovered 63-year-old Ayaan Saichas wearing only a pair of white socks and a left shoe.
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Her blue shirt and bra were pulled up behind her head, which was bloody and swollen.
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She'd been beaten to death and possibly raped.
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Neighbors described the victim as a nice woman.
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She was known for collecting aluminum cans and playing bingo at a Ukrainian church on Friday nights.
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That's what she'd been doing the night she was killed.
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And she was let off after midnight by friends who normally dropped her off after the bingo games.
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They observed her walk in front of her home, and those are the last people who saw her alive.
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One of the real challenging things about this case was you had no eyewitnesses, you of course had no confession, you had no motive.
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This was before DNA profiling, before home security cameras were common, there were no fingerprints on the knife they found nearby.
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But the killer did leave one clue.
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He bit her.
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Investigators took 60 photographs of numerous bite marks.
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The bite marks are being analyzed by a forensic dental specialist.
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Dr. L.
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Thomas Johnson, a dentist and professor at Marquette University, examined the bite marks on the victim the day she was found.
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And he gave the cops a lead.
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He told the detectives, you are looking for a guy with an abnormality in one of his upper teeth.
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So, the cops began knocking on doors.
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Three days after the murder, the detectives knocked on the door of Robert Lee Stinson, a quiet 20-year-old whose only criminal record was a fine for shoplifting from when he was younger.
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He lived with his mother and siblings in a house right by the crime scene.
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Stinson told the police that on the night of the murder, he came home from a party around 11.30, went to bed, and slept until morning.
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But what caught the attention of the police was that Stinson had an upper right front tooth missing.
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That missing tooth made one of the detectives believe they got the guy.
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His partner later told the Milwaukee Sentinel that they went back inside and told Stinson some jokes to get him laughing, to confirm that there were those teeth.
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So the state had Stinson appear at a secret hearing before a judge called a John Doe investigation in Wisconsin, where they could have Johnson, the dentist, check his teeth.
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The John Doe is the first time that I met Mr. Stinson.
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But I'm looking at this kid who is very warm, very affable, very cooperative.
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Everything in my gut, my experience in six years in a DA's office of sensitive crimes, you end up like, no way.
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No way did this guy do this." He thought they would eliminate Stinson as a suspect.
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But that's not what happened.
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Johnson looked into Stinson's mouth for 20 seconds, the same amount of time it takes to read this.
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And then Johnson said Stinson's teeth matched a sketch that he and a police artist had made, a sketch of what the suspect's teeth would look like based on the bite marks.
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Nobody brought the drawing to the hearing, but Johnson said, It resembles what I see here.
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Stinson's mouth, he said, certainly is consistent with what I drew.
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It is remarkable.
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And that was enough for the court to order a full dental examination.
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But if they'd had the sketch in the room, they would have seen that it said the suspect would be missing a lateral incisor.
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Stinson was missing a central incisor, his right front tooth.
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But now the dentist was on the record saying that they matched.
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The field of bite mark analysis is one of the so-called pattern matching disciplines in forensic science.
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Fingerprints are the best known example, but the group also includes shoe prints, tire treads, handwriting, and bullet casings.
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We call them forensic sciences, but they developed independently of what we typically think of as the science world.
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the universities and research hospitals, peer-reviewed journals, grant-funding organizations.
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Those institutions of basic research have fed some forensic fields, but many others lack that foundation.
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You go up the street to the University of Wisconsin
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and you look for the Department of Fingerprints or the Department of Shoe Impressions.
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It's not there.
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That's because these fields developed mostly in response to crime scenes and the obligation to study whatever bits of information they contained.
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The examiners look at samples closely and make a subjective assessment of how similar they are.
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You know, it's funny.
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When people watch CSI or think about forensic science, they often think that it's very high-tech and glossy and perfect and often automated.
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And in the real world, the pattern identification sciences do not work like that.
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It's not that subjectivity makes it illegitimate or necessarily incorrect, But we ought to know something about how accurate it is.
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We ought to know something about how accurate it is.
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For the criminal justice system, this is still a new idea.
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So at the time of Stinson's case, nobody knew how accurate or inaccurate bite-mark analysis was.
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The man who examined Stinson's teeth, L.T.
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Johnson, is a forensic odontologist.
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And bite-mark evidence is just part of what they do.
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When we have tragedies, plane crashes, or other kinds of terrible events, sometimes we use teeth that are found to help identify human remains
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and that's an important tool and I believe quite an accurate one.
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Rescue workers were there quickly, but they quickly learned that there was no one to rescue.
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The same year he worked on Stinson's case, Johnson led a team identifying victims of a plane crash that killed 31 people.
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He would go on to help identify 11 decomposing victims found in serial killer Jeffrey Dahmer's apartment.
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Forensic odontology had been an established field for decades, but it was only in the 1970s
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that they decided to go beyond identifying victims by their teeth and started identifying suspects by bite marks.
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It began with a 1975 case, People vs. Marks in California.
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Edgar Marx was accused of murdering his landlady and leaving a bite mark in the cartilage of her nose.
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The bite mark evidence was deemed admissible even though the appeals court conceded that there was no established science behind it.
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And it became the germinal case
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because all of the precedent establishing cases in high courts across the country cited back to Marx.
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Fast forward a few more years, Ted Bundy goes on trial and there's bite mark evidence in in the Ted Bundy case, and it made movie stars out of a couple of forensic dentists.
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And bite mark evidence took off.
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This norm of precedent of conforming to past decisions, it exists for a reason, but it happens to be the opposite of how science works.
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Precedent is really important in the judicial system.
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We want constancy, predictability, and we have a rule that like cases should be decided the same way.
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Science, by contrast, is inevitably and unavoidably and always contingent,
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progressing, growing, changing, shifting as new research tells us new things and corrects past misunderstandings.
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The legal system's not really designed to adapt to that.
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So a game of judicial telephone convinced the courts that bite mark identification was an accepted area of science,
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when in fact, it had never been tested.
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There's no science that we have seen to support that.
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It's really quite astonishing.
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It's the one thing that gets me truly agitated, because there's just no science to support it.
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A month after Johnson collected models and photographs of Stinson's teeth, he came back with his final conclusion.
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The teeth of Robert Lee Stinson would be expected to produce bite patterns identical to those
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which I examined in this extensive and exhaustive analysis.
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He said the evidence was overwhelming.
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The sketch Johnson referenced at the prior hearing, it was never mentioned again.
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He was showing me, you take this overlay of the pictures of his teeth
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and you put it on the pictures of the bite wounds on Mrs. Sychaz's body
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and you kind of see how they align and they did the same thing with the models.
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But I wasn't completely convinced
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that I could convince a jury based on what Dr. Johnson did that Mr. Stinson was guilty of an offense like this.
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I said, we need a second opinion on this case.
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Johnson recommended Raymond Rawson, who was known as one of the leaders in the field.
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So the detectives flew to Las Vegas to deliver the evidence.
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And they reported that Rawson gave a verbal confirmation of Johnson's finding, but he didn't spend much time on it.
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According to a memo book that one of the detectives kept and later published, Rossin met them at their hotel room at the Four Queens, took a look at the x-rays and the molds,
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and said that was good enough for him.
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Five days later, Robert Lee Stinson was arrested at his home.
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And we decided that to be given a brutal horrific crime like this, we now have two witnesses who are saying it's him.
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And matched against that is what?
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My gut level feeling.
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And so we issued the charge.
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Dr. Johnson seemed to make sense to me.
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We had Mr. Simpson who was lying about his alibi.
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And ultimately the theory is of course the truth will emerge.
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How's the jury decide he must be wrong?
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It's so absurd.
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Contexto e Fundo
O vídeo conta a história de Robert Lee Stinson, um jovem suspeito de assassinato em 1984, baseado em marcas de mordida. A trama explora a análise forense de dentes, um campo controverso, e como uma característica dental o levou a ser acusado. A narrativa é rica em detalhes jurídicos e científicos, com diálogos que misturam relatos policiais, depoimentos e explicações técnicas. Essa combinação de linguagem cotidiana e termos específicos torna o vídeo ideal para praticar shadow speech, pois exige atenção à pronúncia e à fluidez em diferentes registros.
Top 5 Frases para Comunicação Diária
- "No way did this guy do this" (Não tem como esse cara ter feito isso) – Útil para expressar dúvida forte.
- "Everything in my gut" (Tudo no meu instinto) – Fala informal para se referir à intuição.
- "Got the guy" (Achamos o cara) – Expressão coloquial para indicar que encontrou o suspeito.
- "Very warm, very affable" (Muito caloroso, muito amigável) – Adjetivos para descrever personalidade.
- "Slept until morning" (Dormiu até a manhã) – Frase simples para falar de rotinas noturnas.
Guia Passo a Passo para Shadowing
Para dominar o shadowing nesse vídeo, siga esses passos: 1. Escute o áudio 2 vezes sem falar, focando na entonação e no ritmo. O diálogo tem pausas naturais (como nos depoimentos) que ajudam a identificar frases-chave. 2. Repita frases curtas primeiro, como "He lived with his mother" (Ele morava com sua mãe). Use a técnica do shadow speak: fale 1-2 segundos após o narrador, imitando a pronúncia. 3. Aprimore frases complexas, como "The bite marks are being analyzed by a forensic dental specialist" (As marcas de mordida estão sendo analisadas por um especialista em odontologia forense). Pause o vídeo, repita e compare com o original. 4. Grave sua voz e veja se você está mantendo o mesmo tom (ex: a incredulidade em "No way"). 5. Praticar diariamente por 10 minutos. Sites de shadowing podem ajudar a organizar os treinos, mas o segredo é a consistência. Esse vídeo é perfeito para aprender inglês com vídeos, pois mistura realismo e variedade de linguagem, essenciais para o shadowspeaks.
Gramática neste vídeo
As estruturas que o falante mais usa, com as palavras exatas do vídeo:
| Estrutura | No vídeo |
|---|---|
| Voz passiva be + particípio passado — o foco está no que acontece, não em quem faz | were pulled · been beaten · was known |
| Orações relativas who / which + oração — informação extra sobre uma pessoa ou coisa | head, which was · friends who normally · people who saw |
| Present perfect have/has + particípio passado — uma ação passada que ainda importa agora | have fed · have seen |
O que é a Técnica de Shadowing?
Shadowing é uma técnica de aprendizado de idiomas com base científica, originalmente desenvolvida para o treinamento de intérpretes profissionais. O método é simples, mas poderoso: você ouve áudio em inglês nativo e repete imediatamente em voz alta — como uma sombra seguindo o falante com 1-2 segundos de atraso. Pesquisas mostram melhora significativa na precisão da pronúncia, entonação, ritmo, sons conectados, compreensão auditiva e fluência na fala.