which of our efforts are value-creating and which are wasteful? - Eric Ries

Startups are different: too much budget is as harmful as too little — as countless dot-com failures can attest — and startups are extremely sensitive to midcourse budgetary changes.

The growth is all coming from an engine of growth that is working — running efficiently to bring in new customers — not from improvements driven by product development.

good design is one that changes customer behavior for the better.