Futurist and inventor Ray Kurzweil recently sat down with Paul Solman of PBS to explain why he believes he has a good chance of living forever.

Based on Moore's law -- a surprisingly consistent doubling in computing power every 18 to 24 months -- Kurzweil predicts that by 2029 humanity will have reached a state where its technological growth will be able to extend longevity indefinitely.

"I mean, I can never talk to you and say 'I've done it! I've lived forever!' But the goal is to put that decision in our own hands rather than the metaphorical hands of fate," Kurzweil said.

He noted that the longer a person lived, the greater chance they had of extending their lives further because of medical advances. In hopes of extending his own life, Kurzweil takes over 150 pills and supplements a day.

"We will get to a point fifteen years from now where according to my models we will be adding more than a year every year to your remaining life expectancy," he explained, "where the sands of time are running in instead of running out."

But Craig Venter, co-sequencer of the human genome, does not share Kurzweil's optimism for immortality.

"If you want to be immortal, do something useful in your lifetime," he told PBS.

Watch video, uploaded to YouTube by PBS Newshour, below: