If there is something like spirits, supernatural, ghosts, any of that crap..

[Behind the Aegis]

30. No, it doesn't, but it is a good indicator.

Evidence can be proof, which is why people ask for it and when it doesn't exist, jump to the false conclusion the questionable issue is false. However, this has gone on long enough. Basically why I used that response to the OP is because the snide nature indicated to me the OPer 'knows' those things don't exist.

I believe Bigfoot exists. Fine. This is an opinion. The person may or may not have reasons for such belief.
I believe Bigfoot doesn't exist. Fine. This is an opinion. The person may or may not have reasons for such belief.
I know Bigfoot exists. This is false. There is no proof.
I know Bigfoot doesn't exist. This is false. There is no proof.

The last two are both arrogant in that they think they "know" something, when in fact they don't. The really interesting thing is both are two sides of the same coin and often use the same arguments against each other, which can be entertaining.