NASA, which needs its rovers on Mars to keep any soil or rock samples separate from each other so they don't become contaminated, required the challenge teams at WPI to do the same.
That's where the Saran wrap came into play. If the machine has been able to collect anything on the challenge course, it would have been ready.
That, said Stafford, was a great idea from a group of people thinking creatively about a problem.
"Creating is taking things that exist and using them differently," said Stafford. "It's not about winning this challenge. It's about getting what NASA needs done."
Many of the teams that failed their early challenges are expected to try again on Saturday if the weather holds.
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