I chose the 1st option: Yes, we can live forever.
We may not be able to live forever but we can try to extend our lifespan indefinitely.
There is an interesting Wikipedia page:
https://en.wikipedia...finite_lifespan
The terms "immortality" and "eternal youth" are often used as synonyms for "indefinite lifespan", but they carry connotations from their other contexts which science has deemed to be impossible. That is, immortal means "incapable of dying". Eternal implies guaranteed existence for eternity, and in this context is also implausible because of entropy. Even if cures were found for all the degenerative diseases, and effective treatments were developed for all the processes of aging, so that bodies could be maintained as easily as cars can be repaired, people would still be killed in accidents, slain in wars, choose to die, etc.
The term indefinite lifespan represents a more achievable state of affairs, because it merely implies freedom from death by aging or infirmity.
Edited by Astreon, 07 January 2017 - 03:42 AM.