I was talking to my friend who does meditation on a routine the other day. I have always wondered why someone enjoys spending the time to meditate. His theory is that the idea of meditation is to focus on living experience because not everyone is experiencing living. He gave me a few examples:

• When you are enjoying an extremely fancy dinner that costs you 300$, but you know that you are having a technical interview tomorrow morning, you have to go back and sleep early. Are you enjoying the dinner, and tasting every single spice in your food?
• When you are drinking an amazing espresso shot, and someone is knocking on the door which draws your attention away from the espresso. Are you tasting the coffee?
• You can stay in the library for 12 hours and chatting with friends on Facebook. Does that count as studying if your library experience is not studying?

React Fiber is a reimplementation of React's internal algorithm.

Stack	Fiber