Too much serendipity
Serendipitous discoveries of artificial sweeteners and other compounds prompt questions about how much modern chemistry still relies on chance rather than systematic design. Commenters explore why structurally different molecules can all taste sweet, how individual genetics shape perceptions of flavors like stevia or cilantro, and what this implies about evolutionary pressures on taste. The thread broadens into whether breakthroughs in areas like anesthesia and antibiotics reflect guided trial-and-error, genuine randomness, or gaps in our understanding of biology and safety practices in the lab.
Taste differences and artificial sweeteners
- Many commenters report strong, idiosyncratic reactions: aspartame and sucralose often have a “nasty” aftertaste or trigger migraines or gut issues; stevia and monkfruit range from pleasant to intolerable.
- Several tie this to genetic variation in bitter receptors, comparing it to differing reactions to cilantro or cucumbers.
- Some use blends (e.g., stevia + sugar alcohols) or exploit bitter foods (like coffee) to mask off-flavors.
Serendipity, safety, and chemists tasting compounds
- A core interpretation: the article suggests chemists frequently taste new compounds despite safety norms, contributing to “accidental” sweetener discoveries.
- Others argue marketing and storytelling may exaggerate the serendipity (“we just licked it”) compared to more systematic structure-based screening.
- One commenter notes Ace-K was reportedly developed by rational modification of sucrose, undermining it as a pure serendipity example; several discovery anecdotes seem poorly sourced or contradictory.
How much innovation is luck vs guided search
- Some see the high rate of “accidental” discoveries (sweeteners, penicillin, anesthesia) as evidence that innovation is brute-force trial-and-error.
- Others frame it as “guided search”: evolution, prior knowledge, and existing lab work narrow the space, making “luck” more likely.
- Speculation arises about missed discoveries due to pure chance not occurring; SF stories about “obvious” missed technologies are mentioned.
Evolutionary role of sweetness and diet
- Discussion on why humans are so attuned to sweetness: proposed roles include energy density of carbs, fruit as nutrient and vitamin sources, poison discrimination vs bitter phytochemicals, and the importance of sweet-tasting breast milk.
- Some note personal differences in sugar cravings and adverse reactions to processed sugar vs fruit.
Anesthesia and other serendipitous effects
- Anesthesia is cited as another domain where effective agents were all found serendipitously, with mechanisms still not fully understood.
- Debate over what “quantum effects” means here; one side stresses that QM underlies all chemistry, so invoking it specially can be misleading.
Skepticism about the article and meta-discussion
- Some praise the analysis and find the “too much serendipity” framing insightful.
- Others find the piece contrived, meandering, or pseudo-scientific, and wish for clearer bottom-line summaries.
- A small subthread questions whether this kind of amateur reasoning belongs on HN; others defend it as typical of exploratory, hacker-style inquiry.