I'm still reading it, so not had the time to truly practice it, but one important idea I've taken out of it is the idea of the growth and value hypotheses being

I'm still reading it, so not had the time to truly practice it, but one important idea I've taken out of it is the idea of the growth and value hypotheses being the key assumptions in a startup's infancy. I already believed that a startup is a series of hypotheses to be checked out, but focusing on the value hypothesis (will this product deliver value to its customers/users) and growth (will we be able to grow the user base as we expect) first is a good insight.