The Science of Sharing Information: The A, B, Ts of Storytelling

And, the explosion of information across scientific and technical fields over the past few decades has created a world overflowing with data. Scientific publications, repositories, visualization platforms, as well as computational tools, have expanded dramatically to accommodate this surplus; however, the rate of knowledge production now exceeds the capacity of most audiences to process and internalize it meaningfully (Schröder et al., 2023). The dominant assumption remains that more information leads to more clarity, yet the trend of adding more slides, graphs, bullet points, along with articles, produces fact-stacked communication that fails to recognize that clarity does not come from completeness (Olson, 2013). Clarity emerges from narrative. Audiences do not automatically derive meaning from information. Although accuracy remains a priority in an information-dense world, narrative structure is often avoided in fear of oversimplification, even though effective communication is increasingly essential.

But, information alone does not create understanding. The pursuit of more information mirrors the linguistic pattern of “and, and, and,” a communication style that overwhelms audiences with unordered detail and no narrative arc (ABT Narrative Training Program, n.d.). The brain requires structure to make meaning. The human language network encodes experience and knowledge as causal chains, not isolated facts (Chen & Bornstein, 2024); therefore, understanding relies on semantic cognition, the ability to construct a mental situation model from relationships among elements. Without narrative causality, no such model can form (Schröder et al., 2023), so when information is embedded in a narrative framework, audiences understand faster, remember longer, and also make more informed decisions (Schröder et al., 2023). Even expert audiences benefit from narrative scaffolding. Therefore, the MIT Communication Lab explicitly teaches Randy Olson’s And, But, Therefore (ABT) narrative structure in scientific communication because raw information is insufficient; without a narrative, understanding does not transfer.

Therefore, understanding is the recognition of context, conflict, and resolution (Chen & Bornstein, 2024). The brain naturally thinks in stories, so Olson’s ABT model formalizes this cognitive pattern: “And” establishes shared reality, “But” highlights tension or a knowledge gap, and “Therefore” delivers implication or resolution (Olson, 2015). ABT is effective because it aligns with the brain’s cognitive architecture by providing meaning through structure, communicating the why, the stakes, as well as the direction; therefore, narrative is not optional for understanding. When findings are presented with contextual relevance, interpretation, and recall improve because ABT mirrors the brain’s process for constructing understanding.

We live in a world full of information, yet sharing it effectively is essential. But without a narrative structure, information fails to transfer. Therefore, the ABT model enables communication that conveys not only data, but meaning, memory, as well as insight. This article not only describes the ABT narrative but also embodies it through performing it. Using Randy Olson’s ABT-O-Meter, which quantifies narrative coherence, the writing scored an AND Frequency of 2.5% percent, which falls within the optimal 2% to 6% range, ensuring the writing remains connected but not repetitive. This article also has a Narrative Index score of 44, which remains above the threshold of 20 associated with narratively strong composition. This confirms that this article itself functions as a real-world example of the ABT framework in practice.

 

References

ABT Narrative Training Program. (n.d.). The ABT framework. https://abtframework.com/

ABT Narrative Training Program. (n.d.). Randy Olson’s ABT-ometer: Analyze your text using narrative metrics. https://abtnarrative.com/abt_analyzer.html

Chen, J., & Bornstein, A. M. (2024). The causal structure and computational value of narratives. Trends in Cognitive Sciences. https://doi.org/10.1016/j.tics.2024.01.003

MIT Communication Lab. (n.d.). Scientific storytelling: The ABT method. Massachusetts Institute of Technology. https://mitcommlab.mit.edu/cee/commkit/scientific-storytelling/

Olson, R. (2013). Randy Olson: Great Challenges Day [Video]. TEDMED. https://www.youtube.com/watch?v=ERB7ITvabA4

Olson, R. (2015). Houston, we have a narrative: Why science needs story. University of Chicago Press.

Schröder, K., Eberhardt, W., Belavadi, P., Ajdadilish, B., van Haften, N., Overes, E., Brouns, T., & Calero Valdez, A. (2023). Telling stories with data: A systematic review. arXiv. https://arxiv.org/pdf/2312.01164

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  Timothy Durham was convicted of rape when a test showed his DNA genotype matched the DNA recovered from the crime scene. Eye witnesses testified that Durham was in a different state at the time of the incident, but he wasn’t exonerated from his 3000 year sentence until follow up DNA analysis showed that the preliminary forensic analysis used in the trial was misinterpreted (Thomas et al.). DNA testing serves an invaluable part in our criminal justice system, but it comes with complications and bias that can lead to wrongful convictions and misinformed juries.  

Background:

Forensic genetics aims to identify the origin of a biological sample. It can be traced back to Karl Landsteiner who discovered human ABO blood groups. With blood groups, suspects could be eliminated based on their blood type. For example, if a suspect had type A blood and there was type B blood left at the scene by the perpetrator, the investigators could rule out the suspect. Unfortunately, the reverse didn’t work. If the suspect and perpetrator both had the same blood type, it can’t be concluded that the suspect was guilty. Blood identifiers evolved into 8 distinct categories which improved the ability to eliminate suspects, but could only conclude that (if the system matched) it might be the perpetrator or this person might be related to the perpetrator (Jobling and Gill). The field evolved in the 1980s with the discovery of Minisatellites, lines of repetitive DNA that don’t encode proteins. Minisatellite patterns in DNA create what we know today as the DNA fingerprint, and it has a much higher accuracy rate than previous methods (Augustyn et al.). Around the same time, a breakthrough for victims of sexual assault was discovered. In the case of assault, bodily fluids of both the victim and the assaulter can get mixed. A process called differential lysis was created which could selectively increase the concentration of sperm in a fluid sample thereby allowing for accurate DNA testing (Jobling and Gill). Forensics evolved to use single-locus probe testing after several years because of its ease of interpretation. It looked at specific minisatellites that had high variability between subjects. This was the first DNA-based method to be used in a criminal investigation. Two murder homicides from several years apart were connected using DNA evidence. The evidence was then used to exonerate an innocent man, and the guilty party was found when he tried to evade mandatory DNA testing for all men in the small town. His guilt was then reinforced when the DNA profiles matched, and he gave a confession (Jobling and Gill). Finding DNA at a crime scene doesn’t guarantee that you’ll find a murderer. There are issues with non-pure samples and limited samples that make DNA work difficult, and accreditation of facilities and new techniques and take time (Jobling and Gill).  

Subjectivity of DNA Interpretation:

In a 2009 publication, the National Academy of Science discusses the possibility for subjective influence in lab based forensics. The interpretation bias happens in complex cases where, for example, there could be a mixture of DNA. A study published in 2011 looked specifically at this issue. A gang rape happened in Georgia, and the mixture in DNA from the case was used to prosecute one suspect after another suspect took a plea bargain to testify against him. With DNA mixtures, there are three possible conclusions: suspect excluded, suspect cannot be excluded, and inconclusive. If the suspect is excluded, it means that there’s little to no possibility that his DNA is part of the sample. If the suspect cannot be excluded, it means that there’s a possibility that his DNA is part of the sample. In the trial, the DNA examiners who knew the context of the case concluded that the suspect being prosecuted could not be excluded. The 2011 study gave the DNA evidence from this case and the DNA profiles of the suspects to 17 forensic examiners. These examiners had no context of the case, and they all worked independently. Of the 17, only 1 came to the same conclusion (suspect cannot be excluded) as the examiners who knew the context of the case. Twelve of the 17 concluded that the suspect who was prosecuted and convicted had no relation to the DNA found in the sample. Not only does this show that subjectivity occurs due to the context of the case, but the 17 examiners came up with different findings based on their past experiences meaning that not all DNA analysis is objective. Some organizations like the Scientific Working Group on DNA Analysis Methods say that quantitative statistical evidence should be presented with every categorical conclusion, but the US doesn’t require this (Dror and Hampikian).

False Positives:

There are two categories that cause wrongful identification in a DNA report: coincidental matches and false positives. Coincidental matches are DNA matches between two unrelated people. The probability of these matches is about 1 to 500,000 for white individuals and about 1 to 350,000 for black individuals. This small probability of coincidental matches makes people feel confident in DNA evidence. False positives, on the other hand, are matches between DNA and test DNA that result from issues in the forensics lab. There have been multiple cases of forensics labs accidentally switching victim and suspected rapist DNA which lead to convictions that were later overturned when the lab realized the error. There are also cases of misreading or misunderstanding a sample. In a case from 1993, a man was convicted of rape because someone interpreted a mixed sample of victim and perpetrator DNA as an individual sample. The conviction was again overturned. To prevent false convictions, retesting DNA is allowed, but it’s not an efficient solution. Many people are pushing for statistical information on the probability of false positives, so that the jurors can make accurate judgements based on DNA evidence (Thomas et al.).  

Conclusion:

DNA analysis is a useful tool for the criminal justice system, but subjectivity can be an issue in forensic testing. To combat wrongful convictions, there are organizations like The Innocence Project who use DNA testing to free the innocent, but reformed forensic testing standards should be put in place to prevent subjectivity and to ensure juries are correctly informed during trials. https://www.innocenceproject.org/    

Citation:

Augustyn , Adam, et al. “DNA Finerprinting.” Encyclopedia Britannica , 26 Apr. 2018, www.britannica.com/science/DNA-fingerprinting#ref153186. Dror, Itiel E., and Greg Hampikian. “Subjectivity and Bias in Forensic DNA Mixture Interpretation.” Science & Justice, vol. 51, no. 4, 2011, pp. 204–208., doi:10.1016/j.scijus.2011.08.004. Jobling, Mark A., and Peter Gill. “Encoded Evidence: DNA in Forensic Analysis.” Nature Reviews: Genetics, vol. 5, no. 10, Oct. 2004, pp. 739–751., doi:10.1038/nrg1455. Thompson, William C, et al. “How the Probability of a False Positive Affects the Value of DNA Evidence.” Journal of Forensic Sciences, vol. 48, no. 1, Jan. 2003, pp. 1–8., doi:10.1520/jfs2001171.