[woadwarrior01]

I have this mental model that I borrowed from the space industry. Just like how SSTO (Single-stage to orbit) is extraordinarily hard, although not impossible, I've always held the opinion that bootstrapping a startup in hard tech is similarly hard but not quite impossible.

An less riskier approach IMO, would be the multi-stage approach, by solving a series of less capital intensive problems and progressively solving harder and harder problems while accumulating capital for the ultimate goal.