Probably the ONLY analysis of safety pins! Thank you, @bitatlas, really glad you enjoyed it. I can assure you I don't work with safety pins and my curiosity about them is now well-satisfied. Interesting view on entrepreneurship in Angola. The only African country I've been to which didn't have that kind of economic activity everywhere you look was Guinea Bissau in the mid-2000s. They didn't even have the usual street barbers. There was absolutely no cash in their economy at that time. At the other end of the spectrum - Douala in Cameroon. They even had streetside photocopying services under umbrellas, with several vendors hooked up to generators to provide electricity.