How do you know if your tech startup idea is good or not?

[Jacksmith7]

the value of “good” is in the execution of the idea and a number of other factors - not the idea itself.

Good Idea + Bad Market + Good Execution = Failed Validation

Bad Idea + Good Market + Good Execution = Failed Vision

Good Idea + Good Market + Bad Execution = Failed Opportunity

Good Idea + Good Market + Good Execution + Bad Timing = Failed Pivot

Good Idea + Good Market + Good Execution + Good Timing = Success