According to the 'The Lean Startup' by Eric Ries in simple over view of when to pivot: "If the company is making good progress toward the ideal, that means it’

According to the 'The Lean Startup' by Eric Ries in simple over view of when to pivot: "If the company is making good progress toward the ideal, that means it’s learning appropriately and using that learning effectively, in which case it makes sense to continue. If not, the management team eventually must conclude that its current product strategy is flawed and needs a serious change. When a company pivots, it starts the process all over again, reestablishing a new baseline and then tuning the engine from there. The sign of a successful pivot is that these engine-tuning activities are more productive after the pivot than before."