A Joosr Guide to A Brief History of Time by Stephen Hawking

Determinism is the idea that if we can figure out how the entire universe works, we’ll know enough to predict the future—and perhaps even predict the behavior of humans.

there are only two kinds of particles found in it: particles that make up matter, and particles that carry force.

wormhole”—a hypothetical passage that can act a shortcut across spacetime between two locations.

they’re getting even faster, increasing the overall size of the universe by an estimated 5 to 10 percent every thousand million years.

goal of cosmology is to create a theory that explains the behavior of the entire universe

The Innovators by Walter Isaacson

He claimed that it would be impossible to know both the position and the momentum of a particle at the same time, because even the minimum amount of interaction will change its velocity. He claimed that you could know either position or velocity, but not both.

The branch of physics that studies things at a tiny, subatomic level is known as “quantum mechanics.” Quantum mechanics as a field of study came about in the early twentieth century, during a time when determinism was thought to be a strong possibility.

Weak nuclear force is responsible for radioactivity, but does not act on all parti

Electromagnetic force is much more powerful than gravitational force–in fact, it’s one million million million million million million times stronger (that’s a 1 with 42 zeroes after it!).