Not being an idiot in the context of traveling to developing country means a) not carrying too much cash b) not having all credit cards in the same wallet c) no

Not being an idiot in the context of traveling to developing country means a) not carrying too much cash b) not having all credit cards in the same wallet c) not having IDs in the same wallet as the above and finally knowing your credit card numbers (or have a record of it) so that you can quickly call and cancel them. It sucks that it happens but if you take proper precaution it shouldn't ruin the vacation besides a slight annoyance... It's also bad luck, as a counterpoint, I forgot my bag with my computer at a restaurant in Bangkok, I noticed 30 minutes later, came back and the restaurant staff had kept it for me.