Julian Shapiro (Startup Handbook)

Shapiro gives you five specific things to monitor (technology, behavior, environment, regulation, distribution) so your noticing becomes systematic instead of random. It turns idea generation into a standing watchlist, which is exactly the running-review habit our answer describes, aimed at ideas that just became possible.

Finding Startup Ideas through Market Timing

From Julian Shapiro (Startup Handbook) by Julian Shapiro 20 min read

• Watch five market forces for shifts that make new ideas viable
• Ask what recently changed that makes this newly possible
• Combine your own problem with a timing shift for a stronger idea