Well, you said you disbelieve these things on the ground of them being too good to be true. I get that people are more likely to exaggerate the likelihood of s

Well, you said you disbelieve these things on the ground of them being too good to be true. I get that people are more likely to exaggerate the likelihood of success of some technology if it seems extremely promising, and thus one should be more skeptical of those... But given all the other information available, that's a very weak proxy. You can make your own opinion by looking at the science.