[aphantastic]

The cooldown period built into HN is there for a reason: taking time to reflect on messages and do any necessary background research makes for better discussions than impulsively saying whatever is top of mind. I suggest you use this time to understand what an LD50 actually is and how the concept generalizes.

(cc @dang, seeing this growing trend of people misunderstanding the missing reply button and evading the timer via edits, perhaps UI affordances could be developed to better introduce folks to the feature?)