In addition, rats are more mobile than mechanical robots, which are often stymied by obstacles such as fences, rocks and debris.

除此之外，老鼠比呆板的机器人更灵活，因为后者常常被像围墙、岩石和残骸这样的障碍物所妨碍。

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"We went from mechanical robots to personalities that react to information, " says Lund.

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In the game, Mickey's paintbrush is better at dealing with other cartoon characters, while Oswald's high-tech gear more effectively takes on robots and other mechanical obstacles.

CNN: Meet Oswald, Mickey's lucky, techie 'big brother'

The son of a Berkeley civil engineering professor, Pister first built tiny self-propelled robots, such as a mechanical fly that could take wing and transmit data.

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