Idea Validation

How much time should be spent on an Idea Validation?

While one may get several business ideas on a daily basis, how many are actually capable of being put to business.

Who should be consulted to check whether the idea is worth exploring further.

How much time and what tools/means should be used to check the feasibility.

At times too less of time spent can result into a disaster, also spending too much time might end up in loss of opportunity.

Have you tried validating your business idea yet?