The solution I presume now; lets take whitepaper to tell us what the project devs aim to achieve; dont use whitepaper as a reason for investment.
Maybe what you meant is "Don't let the announcement or the release of whitepaper as a reason for investment". I remember those days when a mere announcement for WP release would cause an instant pump. A few made some money on that while many lost due to the immediate dumping.
having said that, there is no way that you're going to invest in any project without reading the whitepaper. You'll have to rely on it somehow.