That didn't look at all obvious when I replied above, because I was replying to a comment that said, in so many words, "Funny that something called Tesla Energy

That didn't look at all obvious when I replied above, because I was replying to a comment that said, in so many words, "Funny that something called Tesla Energy brings back direct current to the home." No, Tesla Energy is not bringing back direct current to the home. It is providing battery backup for continuing provision of alternating current to the home, which is strictly necessary in a world of appliances that run on AC current. I took the trouble to read the fine article before replying the first time, after first reading the previously posted comments. (My late dad was an industrial engineer for a company that manufactured electric generators, so this issue immediately jumped into my mind when I saw the comment I replied to. The difference between AC power and DC power was dinner-table conversation in my home when I was growing up.) Does anyone think that my comment above was in any way harmful to the community or to the discussion here?