This is the question Brian Mlambo gets asked more than any other, usually from someone who's been sitting on an idea for months. Here's the honest answer: you don't know if a business idea is good until someone else pays for it. Everything before that is a guess, however educated.
Stop asking friends and family
The people closest to you will almost always tell you your idea is great, because they want to support you, not because they're your market. Brian learned this the hard way across several of his eight failed businesses — validation from people who love you isn't validation at all.
Look for a problem, not a product
A good business idea starts with a specific, painful, frequent problem someone already has — not a clever product looking for a use case. BidPartner exists because Brian watched capable businesses lose winnable tenders on paperwork, over and over. That repetition is the signal.
Get one stranger to pay before you build anything
The fastest validation test Brian knows: can you get someone who doesn't know you to hand over money, a deposit, or a firm commitment before the product exists? If you can't get a stranger to commit, a full build won't fix that.
Frequently Asked
Talk to potential customers directly, and try to get a pre-order, deposit or firm verbal commitment before building anything. If you can't get commitment for free, you likely won't get payment later.
Asking friends and family for feedback instead of strangers who represent the actual target market, and building a full product before testing demand.
Brian Mlambo is the Founder & CEO of Akha Ventures Group, a twelve-company venture studio, and founder of Founders in Tech, South Africa's largest entrepreneurship community.
Brian coaches a small number of founders directly using the OPERATOR Framework — the same system he uses to run Akha Ventures Group.