How do we effectively achieve immortality...

body swapping

its the only real way

L-like swapping with a qt grill?

Negligible senescence is probably achievable with changes to the human genome in the next couple decades, but true immortality is probably never gonna happen.

Define grill, as in specify age,

16-30, and inexplicably eager to have sex in a male body

Replace the brain over a period of time with electrical equivalents, piece by piece while still conscious. Then once the brain is 100% replaced you can get put in a robot. Uploading is not immortality, it's a copy of you that becomes immortal.

"Ancient" alchemists were in the fucking dark about almost everything.
Henning Brand thought that life and gold and silver must have something in common for some weird reason. So he boiled human urine in a furnace to contrcact gold. Ultimately he discovered phosphorus, but totally out of accident.