Constant Environmental Scan - where do you get ideas from?

link to website
from Dave Pollard
"So if you want to set up a comprehensive Continuous Environmental Scan you need to put a bit more work into it, and you may have to be prepared to spend some money to access some material. And then you need to be patient and perseverant -- it takes some trial-and-error to get the keywords right so you don't get drowned in 'false positives' or more than you can read, and so you don't miss crucial articles. "