For the initial email exchange please see: Correspondence with Graham Oppy on mathematical difference between infinite & indefinitely long lifespans; part 1

For second email exchange please see: Correspondence with Graham Oppy on mathematical difference between infinite & indefinitely long lifespans; part 2

### Email #5, 24th of February, 2020

Hi Graham,

the difference between indefinite and infinite lifespan I want to grab mathematically is this, conceptually framing it: if one is treated with what I call Open Healthspan Technology, all of the known internal ageing related caused of death is prevented, but this does not mean that there won’t be unknown ones emerging that might kill people off, and it certainly does not mean any external causes of death (all of your wipe-our scenarios and much more) will be eliminated, so this means indefinite lifespan with a daily non-zero mortality rate.

As opposed to this scenario, infinite lifespan is what I call immortality means a zero mortality rate on a daily basis, so practical invincibility that applies to all known ways to death (internal and external) that now can be avoided. And here we can include all of your wipe-our scenarios too. Continue reading “Correspondence with Graham Oppy on mathematical difference between infinite & indefinitely long lifespans; part 3”