Test a Business Idea Before Committing Any Real Money

Business ideas that seem compelling at the kitchen table often turn on one untested assumption. The useful validation test is not a survey or a pitch deck: it is the cheapest experiment that produces real evidence of payment intent, identifies the one assumption that kills the idea if wrong, and gives a clear decision rather than more reasons to keep thinking about it.

I have a business idea: [describe the idea, the target customer, and what problem it solves]. I am not ready to quit my job but I want to know whether this is worth pursuing seriously. Help me design a validation test that: costs less than [budget] and takes less than [timeframe], will tell me whether anyone would actually pay for this (not just say they would), identifies the one assumption that, if wrong, kills the idea entirely, and produces a clear decision: keep going, pivot, or stop. Tell me what evidence counts as a pass.