我不会假装在冠状病毒到来之前一切都很完美。
We don't need perfect knowledge to take sensible actions.
实现不可能的唯一方法就是相信它是可能的。
Understanding the limits of computation requires a deep dive into the mathematical foundations that underpin algorithmic complexity.
Every piece of fruit tells a story - of sunshine, rain and care from human hands.
