It could be argued that The Lean Start-up, as a principle, is most likely to be a minimum of a century old. Then the concern emerges: Why has it taken so long for somebody to really conceive all these concepts, join them together and stick them in a book? The concepts discovered in this successful book are so complete that you have to ask why on earth they have actually taken so long to be widely accepted.The fact is that a lot of business owners and supervisors are way too stuck in conventional thinking. They do not desire to alter their ways. The Lean Start-up has actually taken a very long time to catch on since business owners residing in an outdated world required somebody to open their eyes to the fact that their old-fashioned approaches are triggering more negative than positive outcomes. The lean start-up technique is still not mainstream. Numerous business owners are stuck in their old methods, reluctant to accept modification