荒野不是一个地方。它是一个季节。

Following your bliss is a recipe for paralysis if you don’t know what you are passionate about. A better motto for most youth is “master something， anything”. Through mastery of one thing， you can drift towards extensions of that mastery that bring you more joy， and eventually discover where your bliss is.

The essence of causal inference is to go beyond the data and ask what would happen if we intervene.