Comment by dpc050505

It took about 30 years for every geologist to reach consensus on tectonic plates and continental drift. Old heads who'd invested a lot of their credibility arguing against it had a lot to lose by admitting they were wrong, so they refused to do it.

Bill Bryson's book A Short History of Nearly Everything is where I'm taking that from. It's a great read and shows all the ways in which scientists failed to see what was under their nose for decades before finally figuring out, which makes one wonder what's currently ripe for the picking.