Thought for the Day

Science is not perfect. 
It can be misused. 
It is only a tool. 
But it is by far the best tool we have, self-correcting, ongoing, applicable to everything. It has two rules. 
First: there are no sacred truths; all assumptions must be critically examined; arguments from authority are worthless. 
Second: whatever is inconsistent with the facts must be discarded or revised. ... The obvious is sometimes false; the unexpected is sometimes true.
Carl Sagan
Cosmos (1985)

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