I can understand why someone might default to these phrases when they're unsure about something, but I think it's important to remember that admitting you don't know is actually a sign of strength and honesty. It opens up the opportunity for learning and growth, and can lead to better decision-making in the long run. As someone who has made plenty of mistakes in business and investing, I can attest to the power of acknowledging what you don't know and seeking out answers from those who do. So don't be afraid to say "I don't know" - it could be the first step towards finding the answers you need.