Not a point, but an area resembling a scaled image of the sun (if optimally focused).

Also, you can only get as hot as the photosphere due to the reversibility of light. We can get far hotter other ways, eg fusion plants.

You could focus the light into a single point, sure, but that’s not really a laser in the technical sense.

They actually do this. https://en.wikipedia.org/wiki/Concentrated_solar_power

They did everything wrong in that video. On of their assertions was that soldiers wouldn't be able to keep their mirrors properly polished. I don't know about now, but even 40 years ago, polishing brass was a common punishment detail. I imagine it was moreso in Archimedes' day, when brass and bronze were the thing to use. Also, there are techniques for using a signaling mirror to hit a specific location which aren't that complicated, would certainly be something that Archimedes could figure out, and would work better for aligning the mirrors than "try really hard to aim at that spot." The ridiculous assumptions they make besides those also detract from the goal of a best effort to test the heat ray, and seem to stem from the idea that people back then were stupider than we are rather than just not having accumulated as much knowledge as we had.

It was entertaining, but not as informative as I would have liked.

Light Amplification Through Ztimulated Emission of Radiation.

Lazer.

Also Man with the Golden Gun 😃

(we don't get to see the sun lazer actually shoot in it tho)

I think his argument only holds for lenses, not mirrors.

Or maybe a fluffy white cat to pet while pretending to be menacing.

Light Amplification by Zapping Emission of Radiation

You spelled it with an S though... Maybe take a look in the mirror before judging others.

If you're not brave enough to take part in changing the world, how can you expect others to do it for you?