Excellent video, such a pleasure to watch. Even with all the equipment and setup problems, labs are such a good memory...

(Just a minor thing but I thought that the video suggested that the Gibbs phenomenon was a result of the finite decomposition instead of, unless my memory is misleading me, being a sort of fundamental feature of the piecewise smooth square wave function)

Most xiph videos are of very high educational quality.

A really interesting read, thank you!

I sort of like the hexdump approach to viewing text files, here.

Is anybody familiar with any Scheme notebooks preferably with math.js or something similar?

I bet "how many people downloaded the DRM-less version" is an important statistic for Mozilla - Having FF in the middle of an automatic update, I'll be getting the other version however, and I wonder if having disabled this feature, will the browser call home to count towards it...

> I wonder if having disabled this feature, will the browser call home to count towards it...

It will not. Currently the only telemetry related to EME is the VIDEO_EME_PLAY_SUCCESS histogram, which counts successes/failures of playback. It's only enabled then EME itself is enabled, though.

I wanted to take a break (A month or so) from my current project to learn a bit about file systems. I've played with Xv6s filesystem before and am interested in reading about bfs, fossil and related arch and modern ideas in general. Any resources would be really appreciated.

A classic on the UNIX filesystem would be Chapter 4, INTERNAL REPRESENTATION OF FILES, from: Maurice Bach, Design of the UNIX operating system, 1986. It's quite short, about 25 pages.

I believe there is an online version available.

Do you happen to know of more modern resources?

well… I think it makes sense to look at ZFS and BtrFS.

http://www.eall.com.br/hp/Solaris/ZFS%20Internals.pdf is a nice start. Not as comprehensive as BeFS book, but still

I wanted to ask you if tags on a mian dev branch, wouldn't be enough, but I guess the reason for branches is the ability to port back some changes etc.?

Because A knows the month and says B doesn't know the birthday, it cannot be May or June since they have unique days (Which would allow B to know the birthday). So far so good.

After this statement B know it's one of the remaining two months, July or August and that's enough for him to know the correct date hence they day he was told cannot be the 14th. leaving only July 16th, Aug 15 and Aug 17.

Since this information is enough for B to know the exact date, it clearly cannot be August, leaving only July the 16th.

Why couldn't it be in August? For example if B was told 15, he could still do the same analysis, eliminate May and June and come to that conclusion.

In the last line, A notes that B knowing means that A now knows. This is only possible if it is July, since knowing the month isn't enough to distinguish between the two possible dates in August.

This is correct. Although this is how we solve the problem, how did B know? that's where problems like these bug me.

B knows because B had the information "16th", and "16th" is unique among the July and August dates.

Quite, but B could have easily known "15th" or "17th" for all that A knows in this particular part of the story.

Nope, A knows July from the beginning - which rules those out. We, the readers, don't know that until A's final stmt.

only 19 is a unique day.

No, 18 is also a unique day