Educated guess is a good start, that’s how you find what to work on. The important part is the work, you can’t suspect something and preach it as if it’s true. Most of the time these hunches are wrong.

Also, just as a good mechanic doesn’t necessarily make a good racer, knowing how to produce mRNA doesn’t mean that you know what it does and doesn’t do to humans. That’s completely different field.

The guy is a complete schmuck, if he had something he would have been working on it and publishing the results instead of using his CV to preach BS in the media.