May 2010
Beginner to intermediate
160 pages
2h 39m
English
If I had my way, the ideal medium would be universally available at any presentation site and simple to set up. It would be usable in a room of any size with room lights on. Its source of light would never burn out. It would use visual aids prepared from originals of any size that are inexpensive to produce, easy to revise, and produced with any available copying equipment. The visuals would be sharp and clear in color or black and white, and legible to an audience of any size, from 1 to 1,000. Dream on, Zelazny.
Because no medium with all these qualities exists, here’s what’s available for different situations, along with their pros and cons.
Let’s start with those situations where ...
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