LISTED #1 IN "THE 13 BEST BUSINESS BOOKS OF 2021" BY HUBSPOT Have a startup idea? Want to launch it fast? People often spend years on working on startup ideas that fail--and they could have known long before, had they asked the hard questions earlier. Five-time tech founder Dave Parker has been there, and in Trajectory: Startup he offers a path to get you from ideation to launch and revenue in just six months...