Let’s say, for instance, you built a wooden boat and named it Lucy. Eventually you got bored and started replacing the wood with metal piece by piece over the course of a couple of weeks. Soon enough the whole boat was made of metal. So with all the wood you took out, now laying on the side, you decided to build another boat.
After it’s complete, which one is Lucy?
Strangely enough there isn’t an answer neither science nor philosophy can give us. In a manner of speaking, your guess is as good as any. Here’s where it gets interesting. (Think of the answer you gave as you read this next part).
You WERE the wooden boat seven years ago but you NO LONGER ARE. You see the body replaces your cells every seven years. So would you say YOU NOW and the YOU 7 YEARS AGO are the same human being? Maybe…maybe not.