Consensus is not proof.
No matter how many people believe something, it is of no consequence if none of them can prove it.
'Sides, consensus among supporters means nothing.
If you went into a fundamentalist church and gauged support for the earth being only 4,000 years old, you'd find it was pretty high. That "consensus" would be false.
Show me the PROOF that mankind caused the 20th century warming.
If it's so straightforward, so settled, this should be easily done.
But it never is.