Use hard time constraints to force simplicity and speed in MVP development
Setting an extreme deadline (like 12 hours from idea to revenue) forces you to cut everything non-essential and ship the simplest possible version. This constraint prevents over-engineering and perfectionism. The artificial urgency creates focus that leads to actual launches rather than endless iteration.
When to use
When you have a new product idea and tend to overthink or over-build before launching
Don't do this
Spending months building features before getting first user feedback or revenue
2 Founders Who Did This
Used Halfday Build format: noon to midnight (12 hours) to go from idea to first paying customer. Designed in Figma, built in Bubble, launched waitlist
After getting fired, committed to 10-day public building challenge to launch AI Carousels. Built only most basic features despite being a designer