Great and well thought out reply Robert.
There are many thinge that need to be done for sure.
I believe that environmental catastrophe is much higher
on the risk matrix. High likelyhood & severe impact.
However the scientific gains in even attempting to detect
& mitigate against a rouge asteroid are hard to put a value
on. Taking a measure of control over something that for the
last 99.999% of human history we have had no control over.
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