Have you ever wondered about the Paris shops with a sign 'entrée libre' - not so common any more - but you can still find shops with a sign on the door reading “entrée libre”— literally “free” or “unrestricted entry.” When I first visited here this struck me as very odd. Why have a sign on a store announcing that people can come in? Isn’t that pretty much what having a store is all about? Isn’t it kind of like having a sign on a preschool saying “children allowed”? I imagined an entrepreneur giving a pitch to potential investors: “I’ve got this incredible revolutionary idea for a retail venture. You’ll probably think I'm crazy but just hear me out. What I’m going to do is rent a ground-floor storefront space, fix it up nicely, stock it with products, and then — hold on to your seats now, because this is the really beautiful part — I’m actually going to let people come in, off the street, and purchase the goods! Yes! Try to picture it! But we’ve got to move fast before someone else beats us to it!” Later it occurred to me that maybe the reason for the entrée libre sign was to distinguish these shops from the exclusive jewelers and antique dealers that only receive customers by appointment. But even that turned out to be wrong. The point is this: traditionally, entry to a French retail outlet is by default not free and unrestricted — the understanding is that once you set foot inside you are going to buy something. You can’t be “just looking.” I say “traditionally” because most stores no longer observe this custom. Over the past 20 years or so, entrée libre has become the default — except for food shops, which are still the holdout. That’s why most butchers, bakers, greengrocers and fish mongers are open to the street or have a huge display window: you’re supposed to be able to see their wares before entering and refrain from taking up their space, time, attention and oxygen unless you have firm plans to blow some euros. But the first rule of course is to say Bonjour/Madame Monsieur and make eye contact with the shopkeeper. If you don't that's a sign of disrespect and that you are a foreigner. After all, this is the shopkeeper's 'maison' and you as such are a semi-invited guest. Shoppers violate this rule at their peril. I once went to a wine shop hoping to find a specific brand of an obscure aperitif. There were four or five customers ahead of me and only one clerk. All of the bottles on sale were readily visible and, seeing that they didn’t have what I wanted and that it might be 15 minutes before I could even explain this (another unposted rule: no talking to the sales staff out of turn), I wheeled around and headed for the door. The clerk was vividly unhappy about this and called after me, “Oh, Madame!” with a look of outraged exasperation on his face, as though I had just loudly released a fog of paint-blistering flatulence and was now fleeing the scene. In the civic interest, I would suggest that to avoid confusion, the remaining non-entrée libre stores put up a notice saying the exact opposite: “sortie payante” – entry may be free, but getting out is going to cost you.