At which point my brain gave out and I could not compute if daily temperatures of 20-25 degrees C mean that I should pack a jacket, or not. So I called Ondine, who confirmed that I would need one --- no, not leather, too heavy, something lighter.
Bear in mind that I used to field Chicago winters, no problems. One glance at the weather forecast, and I used to know which jacket I'd need, how many layers to wear under it (in the event of the weather changing midway through the day) and which shoes to wear. Now I find myself staring blankly at a website that tells me it's 71 degrees F in Shanghai "right now!" and my only response is to exult that it'll be cooler than it is in Singapore.
For the first time, I'll be bringing my laptop on vacation with me. I'm not going to do any work or read any work-related emails, but I thought it'd be useful for downloading pictures from the new camera and finding out what's going in Shanghai (I've barely worked out an itinerary yet). Plus I'm staying with a friend, so there won't be any security issues.
If anyone is still interested in my shoe count (see previous tallies for five days in Bali and four days in Ho Chi Minh City; I forgot to tally it for the two-week Paris/London jaunt, but I'm pretty sure it was three pairs then), this time it's three pairs for a seven-day trip.
Oh, and unlike the last time, I have a valid passport.
Edited to add (9:51 p.m.): xkcd goes to the airport too! At least I don't have lockpicks and the blood of a churchmouse ...
Edited to add (11.09 p.m.): Okay, I may only have three pairs of shoes (okay, four if you count slippers), but in my one hand-carry luggage and one check-in bag are squished three other bags, giving me five bags in total: one small wheelie, one backpack, one small messenger bag for daily use, one small handbag for going out at night and one fold-up bag that can be used to tote back shopping acquisitions. I think I'm going a little mad --- or taking that old Girl Guide motto "Be Prepared" far too seriously.