Snakes generally move slowly...until they strike.
Re: the medical tools...we brought in a medical science consultant, who helped us design our instruments. His sense was that we're moving more and more toward light as a system of treatment, non-invasive procedures, that sort of thing. No, there aren't anything like those devices in today's operating rooms...but this is 250 years from now. In any event, it *is* based on the latest info we're getting on new science from our medical advisor.
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