The last sentence is simply incorrect. Humans can detect single photons in specific environments. https://www.nature.com/articles/ncomms12172

In real environments it depends very much on the brightness of the flash of light.

Depends. Right now it isnt really that impressive. Bit questionable to build new nuclear power imho.

Just given that other power sources are so much cheaper.

Then there is also the controversy of explicit and implicit subsidies. For instance here: https://www.ucsusa.org/sites/default/files/2019-09/nuclear_subsidies_summary.pdf

a report that shows historically the subsidies were enormous. Right now it seems a bit tricky to estimate - but I haven’t read the report in detail.

Edit: sorry wanted to answer @qooqie

maybe be nicer to each other? I hoped Lemmy would be a bit more open.

The phenomenon has a Wikipedia page… whether it exists, who knows, but you can read more there: https://en.m.wikipedia.org/wiki/Glass_cliff