It is far too early to say Carlsen is the best ever.
who is the greatest chess player of all time?

ah the "meaning of life" 'question is very difficult to answer; a far far easier question to answer is "who is / or was the greatest chess player of all time", that is easy; Tal...

It is impossible to compare due to the technology these days. If some of the past greats had the tools avalable today, who is to say how good they would have been?

yes the world of technology is vastly different, imagine playing flanking openings against chess greats from a hundred years ago... if you did have "modern" openings back then you would have most likely been the early world champion of chess :)

Yeah it seems the Eastern Europeans did only two things, drink booze and play chess; it seems not much more to do in the old "Russian" 'countries'.
Dont you think Carlsen(obviously)?