... on Legal but Erroneously Believed Illegal

Q

What are some things that many people think/believe are illegal but are actually legal?
https://www.quora.com/What-are-some-things-that-many-people-think-believe-are-illegal-but-are-actually-legal/answer/Hans-Georg-Lundahl

Hans-Georg Lundahl

Thomist after starting with CSLewis

Answered just now

Publishing paper printed books from texts on a blog according to a general licence found on blog rather than a special exclusive contract with blogger, and publishing without having previously registered as a professional publisher.

However, in France, once you offer 100 examples of anything in print to the public, for free or for sale, it really is illegal to do so without sending one example to the National Library, and I think there are similar requirements in other jurisdictions.

But that you can obviously do even if you started printing in your home, made 7 batches of 15 examples, and found that the seventh batch made you pass 100 b y getting to 105.