Date: Mon, 30 Oct 2023 21:10:06 -0700
From: Bret Victor
Subject: Re: CCA talk
I gave the talk at CCA today. As pictured earlier, I packed all of Realtalk into a backpack, plus a small tote bag for binders and a keyboard. I set up pretty much as shown, except I mounted the dynalamp to the side of the table instead of the front, so it wouldn't block anyone's view. It was really easy -- a leisurely 20 minutes and I was all set up and tested. Some things that made it especially easy: - The mount clamps onto the table instead of a heavy base on the floor. - The mount doesn't have many degrees of freedom, so when I raised the projector it was already in a good place and didn't need repositioning. - Even when raised, it was low enough that I could position the camera while standing on the ground, instead of standing on the table. - I used a single original-style camera, so I didn't have to worry about focusing or dot testing, and it was just a single calibration. - The room lighting was adequate, so I didn't need to set up a clamp light. (I brought one just in case.) - I used Wifi Buddy to connect to my phone's portable hotspot, so I didn't need to deal with the room's networking. (I had connected to my phone at home before packing up, but when I set up at CCA, it didn't automatically reconnect, and I needed to use the buddy.) The talk went fine. I just went though the media cards and talked about them. During the question period, I was able to put down cards related to whatever people were asking about, including grabbing cards from the website archive. One person asked (essentially) if we had ever done anything like the La Tabla music mode (which I hadn't shown), and I was able to grab the La Tabla card and show videos of pipe cleaners and robits and xylophones, etc, much to her delight. Then I showed Realtalk's music cards, music cards on an RC car, etc. After questions, I invited anyone who was interested to come up to the table, and that ended up being everybody -- the entire class of ~20 crowded around, and that's when the excitement really amped up. I had brought a few classics (gapminder, geokit, etc), but I never even took them out. We spent the entire time playing with my little program that shows the media cards. I read out loud a couple of the rules on the card, and changed the color of the animated dots from green to red, and that just blew their minds. I changed the date caption that's displayed at the top of the screen, and that also blew their minds. In the course of talking about how the dots work, I put a label on a blank and ripped it in half to make it bigger, which got the reaction that it always gets. The biggest reaction came when some people were asking how I had gotten data onto the cards in the first place, and where the data "was". Someone was explaining to someone else that the cards must be links into Google Drive or something. Someone else was talking about hard drives. I did a few seconds of programming, then pointed "From PC to right" to a blank card, opened up the QR code on my phone, took a photo of the class, and the photo appeared on the card. And because the presentation program was still out, the photo also appeared on the big screen. They went wild. I explained that I could take the card to any Realtalk setup in the world and the photo would still be on that card. At one point (during the "we don't track people" spiel) I wanted to show what the camera was seeing, and instead of bringing up calibration mode, I typed "Claim (you) is a "console"." onto a blank, so we could have a camera view without breaking the illusion. (This happened to be on the ripped blank and the image was stretched out, so I fixed the aspect ratio by moving the ripped halves together.) People used the words "magic" and "magician" several times, I think particularly because the way I was manipulating the cards looked like a magician. The cards do feel really good. When I was making them, I had considered printing them in landscape orientation to better fit the media, but you really do want to hold them and deal them like playing cards, which means that they have to be portrait. People asked how they could engage further, and I had to say that the pre-covid answer would have been for them to come by Dynamicland, but the current answer was that I didn't have an answer, but maybe there would be another Dynamicland in a few years. Tear-down was also really easy, less than 10 minutes, then I was off with my backpack and tote bag.