Crispr/CAS9 is not necessarily about large sums of money, though. It's a cheap technique, I could probably teach you it in 3 days of lab work, and someone with

Crispr/CAS9 is not necessarily about large sums of money, though. It's a cheap technique, I could probably teach you it in 3 days of lab work, and someone with lab experience could learn it even faster. The issue is more the genomics. We can tinker with genetic code quite effectively these days, however we can't reliably predict which developmental processes will be affected by our tinkering; in short, we are far behind in our understanding of the array of specific roles of genes beyond the narrowly defined disease pathways we want to affect. Just as an example, say you want to change the encoding for one of the dopamine receptors to discourage dopaminergic activity, hoping to lessen the risk of addiction and reward-based activity. Well, dopamine is also involved in dozens of other processes, including movement, executive function, and more. Who's to say what effects will occur in a fully grown human?