1. Uncertainty about actual synthesis or exposure
Comments repeatedly note that MIT’s updates cast doubt on whether dimethylmercury was ever made or that the student was truly exposed.
“Emerging information calls into question whether this compound was in fact synthesized. … their initial blood test result … shows no sign of exposure to mercury.” – Polizeiposaune
2. Extreme toxicity and historical precedent
The discussion highlights how minuscule amounts can be fatal, invoking the Karen Wetterhahn case as a stark warning.
“Less than 0.1 mL is capable of inducing severe mercury poisoning resulting in death.” – recursivecaveat
“Dimethyl mercury is terrifying stuff – it killed Karen Wetterhahn from a few drops that went through the gloves she had on.” – gilleain
3. Questionable motivations and safety culture
Many commenters wonder why anyone would work with such a dangerous, unauthorized substance, suggesting bravado, curiosity, or lax oversight.
“Why were they working with an unauthorised potent neurotoxin? MIT didn't 'permit' this…” – ggm
“One problem with this subject is that it tends to lead to bragging contests about who has run the most hazardous reactions.” – rdtsc
“There's no point banning it, it's easy to make – let me show you. Hold my beer.” – manarth