It only came to me that people still say Kashimo should get a phD, but genuinely, he is already much more smarter than the fans give him credit for.
For starters, electrolysis. He had to manipulate how his CE interacted with the environment at a molecular rate, and then select the proper elements to interact with. Do not that there was no periodic table of elements in the Edo Era.
Then there's thermal energy conversion. This was quite simple as all he needed to do was maximize his electrical output to the max to generate enough heat, but still smart af.
Then there's frequency matching. You know how singers do high notes and shatter glasses? That's basically the same principle, but kashimo can do it at ANY object. This is also in the domain of soundwaves, btw.
Then there's irridiation. This works best against organic material as it can damage the DNA, but even this wasn't discovered until 1895. Edo was literally 300 years ago at that time lol. It can also cause Cancer at long term exposure, while short term exposure will burn your skin, liquify your organs, and make your flesh off your body.
And all of that is just IQ. Don't get me started on BIQ.