Floor reflections evolved as a constant cue for spatial judgment

Evidence

There is an intriguing logic to the notion that humans evolved while standing on something, and most of what we hear includes reflections from what is under our feet. Wherever we are, reflections from what is under our feet have been useful in gauging distance, among other things. Floor reflections are ever-present. Is that a problem, a virtue or just a fact of life? — Toole, Floyd E, Sound reproduction- the acoustics and…, 1298

Categorization

• QUESTION: Do floor-reflection cues underpin distance perception in ways that vary by terrain? Worth chasing the evolutionary-acoustics literature.