It's truly wondrous how far R can propagate shit until it finally gives up.

Looking at the call stack it's been processing increasingly demented bollocks for nine function calls.

Even then it refused to give in. It now appears to be processing an infinite sequence.

I should kill it, but I feel inspired by its tenacity. "This must be crap, but I'll have a go anyway."

Beautiful. A lesson for us all in that.