The Slide Where Deep Tech Founders Lose Investors
Deep tech founders often lose investors on the technology slide. A simple five-part structure that explains hard science in plain words.
For most startups, that is enough. For deep tech, it often isn't, because one slide eats the time. It is usually slide four or five: the technology slide. The diagram from the lab. The paragraph with three acronyms. The chart with two axes the investor has never seen before.
The investor slows down, tries to follow, and moves on without the point. Everything after that slide is read with less confidence. The science might be world class. The deck just never got it across.
Why it happens: you know too much
Deep tech founders have spent years inside the problem. Every detail on the technology slide feels essential, because every detail was hard won. Leaving any of it out feels like underselling the work.
Investors are reading for something else. A generalist partner is not checking your method. They are asking three questions:
What can this do that nothing else can?
Why is it hard for anyone else to copy?
Why does that matter to a customer who will pay?
Sky9 Capital puts it well: technical founders tend to build decks the way they build products, from the architecture outward. Investors need it the other way round. Square Peg's advice is similar: explain what you do in a sentence or two, then go deep.
The detail still matters. It belongs in the appendix, the data room and the second meeting, where a technical partner or adviser will test it properly. For the rest of the deck, read what investors look for in a deep tech pitch deck.
How to fix it: five parts, one slide
A technology slide that works has five parts, in this order. Each part answers one of the investor's questions, and nothing else gets on the slide.
The headline is the claim. Write what your technology does, in plain words, with a number if you have one. "Our sensor finds a gas leak in seconds, not hours" beats "Multi-modal spectroscopic sensing platform". If an investor reads only the headline, they should still get it.
Compare it to how things are done today. One side by side: the current way and your way, on the measure a customer cares about. Cost, time, yield, accuracy. One measure is enough.
Draw how it works in three steps or fewer. Not the lab diagram. A simple picture with three boxes at most, labelled in everyday words. If it needs more than three, you are explaining the method, not the value.
Say why it is hard to copy. One line. Patents, years of proprietary data, a process nobody else has made work at scale. This is the moat, and investors are looking for it.
Show one piece of proof, labelled honestly. A lab result, a pilot, a partner. Say which it is. A benchmark from the lab is not customer traction, and investors respect founders who say so.
Three rules hold it together:
Spell out every acronym, or remove it. If you need the term, explain it once in plain words.
Test it on a smart outsider. Show the slide to someone outside your field for 15 seconds, then ask them what you do. If they can't say it back, simplify.
Move the detail, don't delete it. Methods, data and technical diagrams go to the appendix and the data room, ready for the partner who asks.
Before and after
Here is the same technology slide rewritten with the five parts. The company is invented, but the pattern is a common one.
Headline. Before: "Multi-modal spectroscopic sensing platform". After: "Our sensor finds a gas leak in seconds, not hours".
Today vs us. Before: a paragraph on detection limits in parts per billion. After: manual inspection finds it on the next site visit, our sensor alerts in under 10 seconds.
How it works. Before: a lab schematic with 11 labelled parts. After: sensor on the pipe, reading sent to the cloud, alert to the crew's phone.
Why it's hard to copy. Before: not on the slide. After: two granted patents on the sensing method.
Proof. Before: "Validated performance". After: a six month field pilot with one gas network, labelled as a pilot.
The after version has fewer words and more facts. An investor can read it in 15 seconds and repeat it to their partners on Monday, which is what you need them to do.
FAQ
How long do investors spend reading a pitch deck?
A DocSend study with Harvard Business School found an average of 3 minutes and 44 seconds per deck. Every slide has to be understood quickly.
How technical should a deep tech pitch deck be?
Technical enough to show what is new and why it is hard to copy, and no more. Put the methods and data in an appendix and the data room for technical due diligence.
Should I include a technical diagram?
Yes, if it has three parts or fewer and uses everyday words. Save the full lab diagram for the appendix.
How many slides should a deep tech pitch deck have?
Most raise decks land between 12 and 20 slides. Deep tech decks often add a technology slide and a proof slide, so aim for the low end and move detail to the appendix.
What do investors want to know about the technology?
What it can do that nothing else can, why it is hard for someone else to copy, and why a customer will pay for it.
Should a scientist present the technology slide?
Usually the founder closest to the science presents it, but the slide should still make sense with nobody presenting. Many decks are first read alone, by email.
Make the science land
Your technology is the reason the company exists. The technology slide is where an investor decides whether they understand it well enough to back it. Give them a claim, a comparison, a simple picture, a moat and one honest proof point, and let the appendix carry the rest.
Bettermade helps Australian deep tech founders turn hard science into a clear story, pitch deck and website. See how we did it for PendingAI and Eden Brew, or book a 30 minute chat about your raise.
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