“I think we can change some memories without changing fundamentally who we are or how we behave,” said Caplan, who is also the editor of Contemporary Debates in Bioethics. “And even if it does change a little bit of our personal identity, it makes us able to function. We have to understand the plight of those who are prisoners to bad memories, to awful memories, to horrible memories.”

"Although somewhat skeptical, Greely predicted that in 10 to 20 years there is “a reasonable chance” that memories could not just be disrupted, but pinpointed and deleted entirely.

So if someone undergoes a deeply disturbing experience—a moment that could scar for life—why shouldn’t he be able to do away with that sad memory, if it is a safe process, and could lead to a significant increase in happiness? Initially, it seems like an obvious answer, but messing with memories is far from a simple process and to snip away at one memory is to inevitably infringe on others."

this source presents many perspectives on the question of change and personality. it developed many questions and gave reputable quotes from experts in the field.


plus, it doesnt always work anyway and requires maintenece seen in ***another source***

"For instance, if someone has been abused, he would still feel a sense of unease if he met the abuser again, even if the memory had been “deleted,” according to Steven Johnson’s Mind Wide Open: Your Brain and the Neuroscience of Everyday Life. That’s because, as Johnson explains, our brains are wired to preserve emotionally serious memories. It’s a great evolutionary mechanism for bonding people together—for remembering all the details of our wedding or evenings spent with close friends—but it wreaks havoc on our ability to suppress distressing memories, even with the use of memory-altering treatments."