@jerlands,
The irony is: you can't have much sense of what we don't know until you study hard what we know... It's tough but that's how it is.
For instance, "we don't understand 98% of the genome" is a meaningless statement, or at the very least misleading. We just don't agree yet among scientists on what the
function of seemingly codeless DNA could be... Plenty of theories around: role in regulation of protein-coding parts, role as metadata, role as protectors of coding bits, or even no role, just "empty pages".