The triple point of pure water is at the temperature just above freezing (0.01° C) and at the pressure (0.006 atm) at which it can exist in equilibrium in all three states: liquid, solid, and gaseous.
Yes, water can freeze & boil at the same time!
The triple point is used to calibrate thermometers.
In a simple tit-for-tat strategy, one begins by cooperating and then mimics the other player’s moves. Tit-for-tat is nice in that it is willing to cooperate and it does not bear a grudge. It also cannot be exploited because any defection from cooperation will be returned.
By Robert Schenk @ ingrimayne.com Re: TitForTat
See also truth bias
“You are old, Father William,” the young man said, “and your hair has become very white; and yet you incessantly stand on your head – do you think, at your age, it is right?”
In my youth,” Father William replied to his son, “I feared it might injure the brain; but now that I’m perfectly sure I have none, why, I do it again and again.”
Alice’s Adventures in Wonderland by Lewis Carroll (1865)
Drinking at least two cups of coffee a day could decrease the risk of death from cancer, cardiovascular disease, and diabetes.
Coffee is rich in polyphenols, a group of compounds with antioxidant and anti-inflammatory activity which can be divided according to their chemical structure into flavonoids and non-flavonoids.
