Matthew 5:37

“All you need to say is simply ‘Yes’ or ‘No’; anything beyond this comes from the evil one.”

When you cast your net deeper you want to be able to do things with what you find which means you need to look for results and try to obtain them. If you are digging deeper into mind you will find things that you can get results from fast and things that you will have to look harder at to be able to get the results from.