It is okay …
to wear older clothes
to not upgrade your phone
to buy second-hand items
to live in a simple home
to read older books
to enjoy home cooking
to travel to unknown places
to earn a living doing what you love
to be an introvert
… it is okay to live a simpler life.
Elon Musk breaks down the first-principles math that told him rockets were massively overpriced
"How much should a rocket cost? The typical approach people take is they look historically at what rockets cost and assume any new rocket must be similar to the prior cost"
"A first-principles approach: you look at the materials the rocket is made of. Aluminum, copper, carbon fiber, steel. What are the constituent elements, how much do they weigh, and what's the material price per kilogram? That sets the actual floor on what a rocket can cost"
"Then you realize the raw materials of a rocket are only maybe 1 or 2% of the historical cost of a rocket. So the manufacturing must necessarily be very inefficient"
Walter Payton's legendary quote regarding true master and greatness:
"When you're good at something, you'll tell everyone. When you're great at something, they'll tell you.”