Join 📚 Hadar's Highlights
A batch of the best highlights from what Hadar's read, .
Whereas chimpanzees spend five hours a day chewing raw food, a single hour suffices for people eating cooked food. The advent of cooking enabled humans to eat more kinds of food, to devote less time to eating, and to make do with smaller teeth and shorter intestines. Some scholars believe there is a direct link between the advent of cooking, the shortening of the human intestinal tract, and the growth of the human brain.
Sapiens
Yuval Noah Harari
The last 500 years have witnessed a phenomenal and unprecedented growth in human power. In the year 1500, there were about 500 million Homo sapiens in the entire world. Today, there are 7 billion.1 The total value of goods and services produced by humankind in the year 1500 is estimated at $250 billion, in today’s dollars.2 Nowadays the value of a year of human production is close to $60 trillion.3 In 1500, humanity consumed about 13 trillion calories of energy per day. Today, we consume 1,500 trillion calories a day.4 (Take a second look at those figures – human population has increased fourteen-fold, production 240-fold, and energy consumption 115-fold.)
Sapiens
Yuval Noah Harari
#3—What would I do/have/be if I had $10 million? What’s my real TMI? In 2004, I was doing better than ever financially, and BrainQUICKEN was distributed in perhaps a dozen countries. The problem? I was running on caffeine, working 15-hour days, and constantly on the verge of meltdown. My girlfriend, who I expected to marry, left me due to the workaholism. Over the next 6 months of treading water and feeling trapped, I realized I had to restructure the business or shut it down—it was literally killing me. This is when I began journaling on a few questions, including “What would I want to do, have, and be if I had $10 million in the bank?” and “What’s my real target monthly income (TMI)?” For the latter, in other words: How much does my dream life—the stuff I’m deferring for “retirement”—really cost if I pay on a monthly basis? (See fourhourworkweek.com/tmi.) After running the numbers, most of my fantasies were far more affordable than I’d expected. Perhaps I didn’t need to keep grinding and building? Perhaps I needed more time and mobility, not more income? This made me think that maybe, just maybe, I could afford to be happy and not just “successful.” I decided to take a long overseas trip.
Tools of Titans
Timothy Ferriss
...catch up on these, and many more highlights
Readwise