The problem with climate change is that experimental validation for the theory of human origin is extremely hard to get. The timescales for validation is on decades, measurements networks are sparse and faulty, all kinds of data twisting and extrapolation need to be done, and in the end we still don’t see anything in our day to day lives. Bush fires have always happened, there’s still polar bears and ice on the arctic, the maldives islands still aren’t underwater, and people still go skiing in winter holidays.

But this is also a reason to be careful with climate change proponents : their model are really just model at the moment, and the experimental validation of them is still mostly pending (although there’s a debate on that as well).

Time will sort this out and will make it obvious who was right.