A 'Your Life in Weeks' tool can visualize lifespan, with the speaker halfway through a 100-year prediction.

“I use a tool um that I learned from a friend he has this um your life in in uh your life in weeks I think it's called and it's this you know you fill-in chart where you you put your birthday you put your predicted lifespan so for me I put a 100 it feels good to me I'm not interested in living much past 100 unless there's some technology that would allow me to do that with a lot of vigor and my friends would be around so and you mark off the the that you fill in these little squares and um I did this morning actually and you know I'm not quite halfway through but I'm about halfway through”