The Lean Startup

The Lean Startup teaches founders to test their largest guesses before spending too much time and money. Build a small version, watch what customers do, and use the result to choose the next step. I like the discipline because hope is useful but evidence pays better. The language has become common enough to lose some meaning, so the habit matters more than the slogans. A company that learns quickly wastes less and builds a stronger offer. That learning process should belong to the team, not only to the founder.