“Are there some things humans can know with absolute certainty?”
Besides our own emotions, all we can know with absolute certainty is that for at least as long as we are limited to our physical bodies and the limitations of the physical world – nothing is for certain.
Although, maybe math. And the past. But not even that because the only way we have of telling the past is through stories passed down through other individuals and everyone has their own biases. And as for math – it’s probably a lie. All the algorithms are probably just sent to us by aliens intent on a slow and steady destruction of the human race.
I’m on to you, floating green alien population.
theskywillfall 