At a rough level of description, humans have about twenty thousand types of messenger RNA.

“And to say in a human, maybe it's just something like twenty thousand different types of these, we're splicing many, many more, but they're sort of the, the rough level. So what you de facto have is per cell a twenty thousand dimensional vector that has a whole bunch of zeros when stuff is not there, but then a whole bunch of sort of numbers, how many of these counts of these messenger RNAs you have.”