On 19/10/2020 15:28, Harry Bloomfield wrote:
The Natural Philosopher formulated on Monday :
Echoes of your own breathing bounce off nearby hard objects, and by
lifting your feet way up to avoid tripping on low stuff, you can even
run reasonably well.

Only until you meet a deep and unseen in the dark, large drop.

Not many of those around and even those you sort of can sense by the
sound of the echoes.

Or even subtle temperature or wind changes...

Try it sometime...we are not as 'blind' as we think we are.




--
Climate Change: Socialism wearing a lab coat.