We use the word ‘watching’ to talk about the part of the mind that is just watching only, but when we watch, the mind speaks to us; and that’s the investigating bit.
You’re watching something and you think ‘What should I do now? What am I aware of now? What’s happening now?’ – All that is investigating happening.
Whether you should investigate more depends on your state of mind. If awareness is better and your mind is calm, then you should investigate; but too much investigation is also not good.
We should prioritize awareness because we have to gather information first; when you have enough information, you can then investigate why and what. Then only you can see the whole picture and understanding can arise.