What are the differences between assistive and adaptive bioengineering

Assistive bioengineering involves medical devices and equipment that continuously work on machine learning by the way they obtain information from surrounding. Suppose an assistive robot, it will try to learn what patient does and then tries to improve and give most optimistic assistant to them and also it goes far beyond their needs. While, adaptive bioengineering infers to be just adaptation to the situation of the patient till it's fairly enough decided to be in complete adaption to patients' needs. It also includes machine learning but not improving more than what patient needs.
Assistive system is more on improving side in comparison to adaptive bioengineering.

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