This issue was brought up in the thread, "I think therefore I am", by Manuel_Silvio; and I wanted to get some answers to the question: Is Causality necessarily true? Here is an example that Manuel used, and I think it sheds some serious light on the matter: Suppose I flip a coin, and get "tails" every time, and there's a mosquito on the window-sill. Now, do I attribute my having gotten "tails" every time to the mosquito's presence? Let's say I do it 100 times (with the mosquito still present), and get "tails" every time, do I now attribute it to the mosquito's presence? What if, after the mosquito leaves, I flip "heads"? Do I now conclude that it was the mosquito's presence that caused me to continually flip "tails"? Most would find this preposterous, and rightly so, IMO. However, what if everything that we have ever believed was caused by something we did, was actually going to happen anyway? Any and all comments on this subject are welcome.