Pretotyping is a method used to test business ideas quickly and cheaply before investing significant resources. It involves creating a simple version of a product or service to gauge interest and gather feedback from potential users. This approach helps entrepreneurs validate their concepts early in the development process. The goal of pretotyping is to determine whether a product idea is worth pursuing further. By focusing on the core value proposition, entrepreneurs can avoid costly mistakes and refine their ideas based on real-world reactions. This technique is particularly useful in the fast-paced world of startups, where time and resources are limited.