What issues are the characters engaged in the story ‘ Too Bad’ by Issac Asimov?

The issues faced by the characters in 'Too Bad' was when the robot was Mike had possibility of threat to the lives of its patients in changing its size.

Explanation:

"Too Bad" is a short story written by Isaac Asimov. The story is a science fiction based on robot named Mike created by Dr Gregory.

Dr Gregory created a technique called miniaturization which enabled a robot to change its size. Dr Gregory had inoperable cancer,  which he believed could be cured by this technique of miniaturization. So, he injected Mike in his body and it cleared the cancer cells from his body.

The issue faced by the characters was when Mike had the possible threat to its patients life in returning to its normal size. When Mike used to reduce to its normal size, there was a problem of unplanned expansion which had possible threat on patient's life. Mike also had problem while re-expanding itself after cleaning the cancer cells in Dr Gregory's body.

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