Wittgenstein's ruler: Unless you have confidence in the ruler’s reliability, if you use a ruler to measure a table you may also be using the table to measure the ruler. The less you trust the ruler’s reliability, the more information you are getting about the ruler and the less about the table.

There are too many political, economic, and social incentives involved in propagating this new vaccine to say anything about it with the least bit of certainty. The fact that so many are presenting such an uncertain topic with such certainty itself carries a signal.

The only thing that will solve this uncertainty is time.