Why blackboard?

A blackboard can mean two things:

1. A blackboard (and similar color based names for the same thing) is a reusable writing surface on which text or drawings are made with chalk or other erasable markers. A chalkboard can simply be a piece of board painted with matte dark paint (usually dark green or black). It is usually dark green as this is less harsh on the eyes than black. A more modern variation consists of a coiled sheet of plastic drawn across two parallel rollers, which can be scrolled to create additional writing space while saving what has been written.

2. A blackboard system in computer science is composed of an area of shared memory, referred to as the blackboard, that contains a problem to be solved and a number of different processes, referred to as knowledge sources, that can access and modify the blackboard. Each knowledge source will post a partial solution whenever doing so can contribute to the overall solution of the problem. These partial solutions cause other knowledge sources to update their portions of the solution on the blackboard until eventually an answer is found.

Same word.

Different technology.

One purpose: to facilitate the teaching-learning process.

Blackboard is conceptualized as a venue where the author can share his insights and at the same time acquire knowledge from others through intellectual discussions.