Trials and errors

Only difference is that we have a concrete evidence for climate change and leeches and the four humors where just speculation and everyone went with it because it made sense at the time

It’s there but your just too blinded by your ignorance to actually look at the facts and face them

hahahahahaha :-)
Thank you... I needed the laugh today

No we don't, we have computer models.

If you're talking ice cores and other evidence then you should be honest and tell everyone those items show warming AND cooling on REGULAR cycles. What caused the last ice age to melt around 30,000 years ago, long before modern man and industry?

And bloodletting

The Earth is round. Thats a settled science.

Actually the earth isn't round isn't do to the spinning causing a bulge at the equator. It's a oblate spheroid.

I suppose even if it IS flat it could also be round, so I suppose you could be right.