（ 掌聲 ） 喺度想講嘅係 某啲高性能任務簡單過其他任務 同埋 ， 理解問题背後嘅物理 你就可以知道邊樣簡單 、 邊樣難
What I'm trying to say here is that some high-performance tasks are easier than others, and by understanding the physics behind the problem, you can know which ones are easier and which ones are just as difficult