Time might flow backwards as well as forwards from the big bang

[Shasta56]

As I said, Le, my perspective is a nursing one.  Respiration is defined as a gas exchange.  Of course, by breathing,  we contribute to global warming, since we exhale carbon dioxide.  Except for people with COPD, because they retain carbon dioxide.  But I didn't mean to get started on a nursing lecture here.  It's been a long week.  I think I'll take a nap.

Shasta