D
Doggit
but the balance of evidence still points to us being the cause
Yes it does Wobs, but it's not absolute proof, but if you don't keep an open mind over it, then you might miss the evidence that points you in another direction.
First of all, we know that it is caused by us,
Sorry, but you can't say the balance of evidence still points to us being the cause, and also say that we know that's it's caused by us - these are what's know as contradictory statements.