but we will be able to genetically engineer ourselves out of it before it becomes a serious issue.
What is your level of uncertainty regarding this? It would seem to be merely a possibility, especially if we undershoot due to falling intelligence levels ...
Even ignoring engineering, there is already preimplantation genetic screening with in vitro fertilization to screen out chromosomes with known heritable defects.
What is your level of uncertainty regarding this? It would seem to be merely a possibility, especially if we undershoot due to falling intelligence levels ...