1) vision statements and vision are different but have similar issues.
think of vision as some ideas of where you see a company or product, where you feel things should go. Its a working idea
2) a vision statement is a kind of sell document– and you need to sell, you need to re-instill confidence in customers, secure budget and support from management, get sales to take on pitching your product. What vision statements and vision don’t actually do is innovate, invent, or harness and exploit serendipity. Many I’ve worked with and spoke with admire a triumphal narrative of vision, foresight, and raw talent over luck, serendipity, and hard work. In human interface work, with the constant humbling of trial and error, hard work, luck and frankly, opportunism, tend to make projects successful.