How to Evaluate a Pre Revenue Company?

How do you evaluate a pre revenue company? Soy, the highest of all top, top of top line is when there's zero revenue. The typical advice tro compensation negotiation type people is to value your equity at zero. Some of the biggest fortunes working as an early employee comes from joining a start up when it's pre revenue. So how doupot t, i think there's one point of view that everyone should take into account in their decision-making process.