Root is fiddling with part of the library computer. Cheung is reading from the USS Mumbai maintenance manual. I am assuming that mechanics on a starship will not have memorized every detail of the blueprints ahead of time.
Sarabhai is waiting for the repairs to be done so she can get back to work.
With apologies to Gene Roddenberry and the many professionals and amateurs who have created the Star Trek universe over the years.
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