Should there be light?

I've tried to sell the idea of photographic lights to Pinsel, who's not too keen on using them. What is external light good for and when it makes no sense? How to start when you have no experience with lighting? And can you replace it with higher ISO? Learn about it in today's episode.Also here's a picture link I've promised (don't worry, it's unlocked): https://www.patreon.com/posts/55974818