Excerpted from Inc.com:
We live in a world of signals. There are innumerable bits of information that float around us every day. We see and hear things that are relayed via media—the internet, television, books, magazines, trade journals and even radio. We pick up snatches of conversation in the check-out line or on the street or in the hallway. We receive emails and scan message boards. Some information that enters our orbit has more immediate value, and some information may not be relevant now, but may have important implications in the future. This type of information is indicative of a weak signal—that something is happening. Entrepreneurs take the time to speculate and engage in deeper analysis of that “something” before deciding to act (or not).
By CGP Grey (VLA 4893505508) [CC BY 2.0 (http://creativecommons.org/licenses/by/2.0)], via Wikimedia Commons