Did you define your strategy from a market research and your assumptions were not validated in the market? Did you realise that after investing time and money developing the perfect idea there is no traction for it? The worst that can happen to our project is to lose time developing features nobody wants. Product discovery, dual track, MVP and RAT experiments become more and more relevant to our everyday decisions. Avoid going waterfall and learn how Deliveroo, Dropbox, Zappos, Booking.com, eDreams and other companies are trying to innovate.