The myth: 'a quantum computer tries every answer at once and picks the best.' If that were true it could solve everything instantly — it cannot, and repeating the myth to a technical buyer costs you the room.

The truth is more beautiful. Quantum states behave like waves, and waves can cancel or reinforce. A quantum algorithm choreographs the computation so that paths leading to wrong answers cancel each other out, and paths leading to the right answer pile up. Then measurement lands on the right answer with high probability.

Analogy that works in any boardroom: noise-cancelling headphones — sound waves erased by their own mirror image. A quantum algorithm makes wrong answers erase themselves.

Key factThe trick only works on problems with special mathematical STRUCTURE you can turn into an interference pattern. Spreadsheets, databases, email: no structure, no speedup. Finding the period of a repeating pattern: perfect structure. And factoring — RSA's foundation — secretly IS a period-finding problem. That coincidence is our entire industry.