How do you go about making that conclusion? How are you measuring what is and isn't known? I would suggest that we know a great deal, though certainly there is a great deal that we don't know, but how do we go about quantifying that?
For instance, the number of species known to science is very small compared to the number estimated to exist (something between 10 and 100 million if my memory is accurate). But does that suggest that we known next to nothing about life on earth? That's a strange conclusion given that we understand the mechanism that created that diversity, and the theoretical framework given by evolutionary theory tells us a great deal even about those species that we haven't discovered yet. Moreover, we may not have classified the majority of species, but we are likely familiar with all extant kingdoms of life on earth. And understanding those divisions seems more meaningful and offering deeper understanding than simply naming every species.
My point is that while there is a great deal left to discover, perhaps even some fundamentals, we have a good general understanding of the way the world works. To call that "almost nothing" just seems silly to me.
Well,
I am silly. You're not the first to suggest it, even in this thread. You are the kindest, though, which I like.
So let me explain the good news in my "almost nothing" slander of the human ego:
As I imagine the future, which I won't be in, human learning and data exchange is explosive. Is it Moore's law I'm thinking of? It will get squared.
And the humans of that future will have a pie-chart of what was known today, vs/ what is known in that new time...and our slice of that pie; what is presently known...it will be 'almost nothing'.
Less than a full slice of pizza, for sure.
One might reverse engineer this pie graph for 100 years ago vs/ today.
100 years ago, we knew plenty.
The amount, in today's pie, would be 'almost nothing'.
So, in this way I express my faith in the continued acceleration of our collective knowledge, and remind myself, reflecting from the future, that we know "almost nothing". I mean this in a good way.
The part that might sound even sillier, but is most likely true, is that almost everything we know is wrong.
Its not totally wrong. It sort-of works and all...but it is never correct.
I see no harm in approaching the universe from the perspective of knowing almost nothing, and even the tidbit is mostly wrong.
Extrapolation. History. Aggression.
Sometimes we know stuff we don't quite know enough stuff about. I like to err on the side of assuming we know very little and that we have a history of being wrong about most of that.
Perhaps Pixy will back me up on even my own wrongness in this assessment.
I certainly sense a good possibility that I'm wrong. We usually are.