[rich2202]

Until wifi technology improves, I don't think you are going to get more than 6 robots on the field.

I think "change" might be a reference to what the robots do. To keep with the recycling motif, I was thinking the robot changed the game piece from "trash" to a usable product. However, that would appear to create a lost of waste (one-time use game pieces).

Another "change" from prior years might be the alliance robots working together to assemble the game pieces into something.