But we're going to have questions like that //where we have things we're doing// that don't make sense // when the market changes and the world changes.

1. 网友的理解不完全正确。

2. where we have things we're doing that don't make sense 是定语从句，questions like that 为先行词。

3. we're doing 是定语从句， things 为先行词。 that don't make sense 也是定语从句，先行词也是 things。这样，we're doing 和 that don't make sense，是“双重式定语从句”，分层次修饰同一个先行词 things。

4. when 引导时间状语从句。