When you’ve got a new product or service you believe will change the world—or at least your industry—naturally, you’re excited. And it’s tempting to slip into exaggeration about what you can or will do—but don’t.

Presenting goals as facts, stating best-case scenarios without qualification, hyperbole (“best,” “cleanest,” “most advanced”), and other forms of exaggeration are credibility killers.

Why? They trigger BS detectors, subjecting you to extra scrutiny. When people realize the statement is not quite true, they’ll doubt everything else you say. And they set you up for failure if you can’t deliver the best case.

Stay credible and create confidence in your enterprise by making the strongest claims that you can support. Don’t say you’ll have product on the market next year unless you absolutely know you will—give a conservative target date, and explain (briefly) what needs to happen for you to meet it. And don’t say your technology delivers the “world’s lowest emissions” or some such unless you’re prepared to back it up with an honest comparison of your performance with everyone else’s.

In short: if you can prove it, say it; if not, don’t.