I have a bitcoin paper wallet I want to use to buy XMR. Is this possible without any intermediate crypto?

I only see that I can add an "Altcoin account" which does NOT include bitcoin. Weird ??? I know Bisq comes with an internal bitcoin wallet or something. Do I need to transfer my BTC to this internal wallet?

Also, when I go to the Buy tab, the only "Payment method" listed from sellers is "Altcoins" or "Altcoins Instant", so paying with bitcoin is out of the question ?? Or what am I missing ??

I can't find it anymore. It claimed to be a serious place that collected and sorted all evidence related to UAPs.

It also recommended the book "In Plain Sight - an investigation into UFOs and impossible science". It was a BIG website and (I think) had on the left side of the page a list of all topics it had info on.

What was this site called?

The issue in the link already has a proposed solution (as far as I understand), but I don't understand how I can "use" that. Can I just copy-pasta the code? Or is it more complicated?

Because you use light to communicate in sign language, and light is just an electromagnetic wave like radio but on another frequency. You just need to be in line of sight