The truly weird whys
The whys that flip the obvious on its head. What we thought we knew, and what it actually is.
Because most brains automatically convert written text into inner speech: a leftover from learning to read aloud. But a meaningful share of the population hears nothing at all when they read; it's called anendophasia.
Because Edison pushed "Hello" as the standard greeting, against the "Ahoy" Bell preferred. The word spread through the first telephone companies, and most languages built their own greeting around it. French turned it into "allô".
Because the posture saves heat (a tucked leg loses far less warmth in cold water) and because a passive locking mechanism in the joints lets the flamingo stand without any active muscular effort, even while asleep.
Because the universe has an age: light from the farthest stars hasn't had time to reach us yet. And the light that does arrive has been stretched so far by cosmic expansion that it has slipped out of the visible range.