In that reading there is often the use of the term "break down the brick wall," or "I have come up against a brick wall," or "I can't go further because I have hit a brick wall."
FULL DISCLOSURE - I hate the term "brick wall." In my view there is only one thing to do when stymied:
So do what I do:
- Revisit or create a more detailed and thought through research plan
- Revisit your own conclusions
- Make sure to incorporate "cluster" or FAN research into your plans
- Research more
...and when you are done with all the above and are still stuck - research even more!
There has been tons written about this subject and you can certainly find out more methods - but it is all about researching more.
MOST OF ALL
Don't focus on what I consider to be a negative term to take away your positive drive to find what you want to find.