I think six slides + an actual working MVP with some traction is probably the best proposition for first-time funding.<p>Keeping your deck to just six slides, when you have nothing else to show might not be the best idea.
<i>"I made this letter longer than usual because I lack the time to make it shorter."</i> -- Blaise Pascal<p>This is an interesting pattern! You start with simple and wrong. You improve it, and become complex and right. You master it, and finish simple and right. And then you have six slides.<p>It seems to happen in every human discipline - writing/speech, math, games, physical activities, philosophy. And many languages have the same kind of word or concept: elegant, sprezzatura, shibumi.<p>I wonder if there are any good general techniques for minimising the jump in the middle?