We can't even repair our own machines to the point that they last forever. I doubt we'll reach eternal youth any time soon, so I do think that we can lengthen l

We can't even repair our own machines to the point that they last forever. I doubt we'll reach eternal youth any time soon, so I do think that we can lengthen life span quite a bit (low-hanging fruits) before we hit a wall that take even longer to surpass.