we are free range slaves, mind controlled from birth to believe what those who own and control all sources of information from textbook publishers to broadcast media conglomerates through ownership of the sole licence to create money for the world's economies out of thin air want us to believe.
unless you realise that every piece of information you have not deduced for yourself is skewed, often to the point of being the opposite of the truth, you will never realise the depth of the real, genuine conspiracy to take over the whole world and rule it as all-powerful tyrants.
about the only two things you can rely on are a) you're alive, you have consciousness and a reasoning mind, and b) the sky is blue - regardless of semantics every one with sight would pick the same swatch on a basic colour chart.
for everything else, if you are seeking truth you must really ask your self 'what else do i believe to be true, and how do i know that?'
peace.