killed by an asteroid strike, not killed by climate change stemming from the asteroid strike.
I am not sure if we can pinpoint that you have a one in 700,000 chance of getting hit, or even indirectly killed.
By a similar statement, there is some possibility you could win the Powerball and never buy a ticket.
A person could drop an unsigned ticket and you might pick it up, check it, and find out it is a winner.
Not a zero probability event.