测量的精确性不仅仅是技术问题，更是拓展人类知识边界的关键。

The process of mathematical discovery is as important as the discovery itself.

人们还往往把真理和错误混在一起去教人，而坚持的却是错误。

Keep all your things visible in a hotel room， not in drawers， and all gathered into one spot. That way you’ll never leave anything behind. If you need to have something like a charger off to the side， place a couple of other large items next to it， because you are less likely to leave 3 items behind than just one.