困难
Change is hard, but it is necessary for progress.
Factoring large numbers is believed to be hard for classical computers, but quantum computers can do it efficiently.
The hardest single part of building a software system is deciding precisely what to build.
"The study of computational complexity teaches us that some problems are inherently difficult, no matter how clever our algorithms are."
A good system design is one that makes it easy to do the right thing and hard to do the wrong thing.
"In the face of overwhelming odds, the human spirit can still triumph."
Prediction is very difficult, especially about the future.
Every great and deep difficulty bears in itself its own solution. It forces us to change our thinking in order to find it.
Prediction is very difficult, especially about the future.
Never underestimate the power of the human spirit. It can overcome the most impossible odds.
"We must always strive to do the right thing, even when it is difficult."
