> I had a lot of hope for things like Khan Academy, but the issue is video is not text and it's hard to iterate and improve on.
Not the issue.
> I really wish textbooks with open licenses would take over and they could be reworked and improved year after year by different people
The issue.
There actually isn't even a good open content license, analogous to the GPL-style licenses. Improving on video means having access to the source files. Ditto for interactive activities. Khan Academy is designed to look as open as possible, while withholding just enough and being just mean enough with license to make any sort of reuse a hopeless endeavor.
With the proper piece in place, video is very possible to iterate upon.
> I had a lot of hope for things like Khan Academy, but the issue is video is not text and it's hard to iterate and improve on.
Not the issue.
> I really wish textbooks with open licenses would take over and they could be reworked and improved year after year by different people
The issue.
There actually isn't even a good open content license, analogous to the GPL-style licenses. Improving on video means having access to the source files. Ditto for interactive activities. Khan Academy is designed to look as open as possible, while withholding just enough and being just mean enough with license to make any sort of reuse a hopeless endeavor.
With the proper piece in place, video is very possible to iterate upon.