Burying your traction on slide 28 is the fastest way to lose a venture partner. Most founders assume volume equals expertise. They drop a massive rock of information onto venture partners, hoping the investor will dig through it to find a reason to write a check. But reality works differently. Venture partners review materials on their phones in the back of a cab or between meetings. If your core growth metric is hidden under a solid wall of text, nobody is going to see it. You lose their attention before they even understand your business model. Your presentation should be a scalpel, not a sledgehammer. Cut your deck in half. Leave empty space so your most critical numbers can actually breathe. One clean layout proving your unit economics closes rounds much faster than ten pages of technical documentation and product features. Open your current pitch deck. How many slides can you delete today without losing the core narrative? 

The phone-in-a-cab test is a good one. A quick way to check it is to shrink each slide to thumbnail size: if the key number still reads there, it will survive a phone screen. Do you set a minimum size for metric callouts in your decks?