It all sounds so simple to do doesn't it, so simple it even brings out backyard lab rats running experiments on themselves as was highlighted in the first vid.
Cispr is an important bio-medical break through with great promise for the future in (dare I say it) cleaning up the human gene pool and ridding us of the 'problems' that have plagued us since forever.
However, whatever dystopian or rosy picture one can envision is somewhere well over the horizon......there is a lot more unknowns than knowns in the field of genetics and bio-engineering.
On junk DNA: