Sort:  

How do you deduct that from removing anything given or not known for sure

Similar to breathing air that I can’t touch or see.

You don't actually know that you're breathing air. The only thing you are 100% sure of is that you exist, because I think therefore I am.

Coin Marketplace

STEEM 0.06
TRX 0.31
JST 0.061
BTC 68885.47
ETH 2085.53
USDT 1.00
SBD 0.51