I've always felt you don't have to be completely detached, emotionally uninvolved to make precise observations. There's nothing wrong with feeling great empathy for your subjects.
As human beings, we can encompass a vague feeling of what the universe is, and all in this funny little brain here - so there has to be something more than just brain, it has to be something to do with spirit as well.
The problem of the chimps is that they can only sit and look. They can't discuss what they feel. All that feeling is trapped within each one.
And always I have this feeling--which may not be true at all--that I am being used as a messenger.
We can learn to suppress our feelings for other reasons.
Researchers find it very necessary to keep blinkers on. They don't want to admit that the animals they are working with have feelings.