improbability and impossibility

https://mander.xyz/post/32684309

What to do if you find yourself stuck with no hope of rescue: Consider yourself lucky that life has been good to you so far. Alternatively, if life hasn’t been good to you so far - which, given your present circumstances, seems more likely - consider yourself lucky that it won’t be troubling you much longer.

What’s that from, sounds familiar.
Hitchhiker’s Guide to the Galaxy
Thanks! That’s what I thought it was.
Douglas Adams always knew exactly the right words to say.