George and Drake’s equation

George was a pirate, but he wasn’t a very good pirate.
He wasted a lot of time on things like Fermi’s Paradox.
“If there’s intelligent life in the universe, where is it?” asked George.
He drew up Drake’s Equation on a chalkboard and played with the numbers.
His conclusions were grim.
“By my calculations, there should be absolutely no intelligent life in the universe.”
“That’s nice,” said the captain. “But if you haven’t noticed, we’re trying to take over a Spanish galleon. Mind picking up a cutlass and helping?”
George picked up his cutlass and lowered the “civilization survivability” variable.