How many times do Freudians, physicists, socialists, economists, biologists, say "we are sorry, our predictions did not pan out."

I'm a Popperian. When the facts (best available science) changes, I change my opinions. Also known as "science".

Whatever their faults, the Malthusians made predictions. To be debated, validated, debunked. Far more useful than the techno utopian unverifiable views of the libertarian ostriches.

Just because a ship misses an iceberg doesn't mean that spotting the iceberg was a waste of time.