Yes, immortality would have to be accompanied by neuroplasticity drugs. The biggest benefit of neuroplasticity drugs, btw, would not be that users would acquire

Yes, immortality would have to be accompanied by neuroplasticity drugs. The biggest benefit of neuroplasticity drugs, btw, would not be that users would acquire new knowledge, but that they would forget outdated knowledge. As I get older (and I'm still relatively young) I observe that I keep remembering things that are wrong and sometimes I even base decisions on that outdated knowledge.