Question

what does the refer to the writers guitar incident which idea does it support
8th std ​

Answer 1

When Stephen Hawking said that the disabled people should concentrate on what they are good at,the writer related the guitar incident that he had tried to learn a Spanish guitar which was larger than he himself. It supports Stephen's idea.

OR

When Stephen Hawking said that, Olympics for the handicapped or disabled people are waste of time.  The writer agreed with him. He remembered the years which he tried to play a big guitar. He felt defeated. so he destroyed it one night. Its supports Stephen Hawking idea that the disabled should only concentrate on what they are good at. 

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Answer 2

When Stephen Hawking mentioned to the author that Olympics for the disabled was a complete waste of time, this reminded the author about the years that he spent trying to play the Spanish guitar which was considerable larger than him. One night, he loosened the guitar strings without any regrets. The author could understand Hawking’s message for disabled which mentions that one should try to concentrate on what they are good at, rather than trying to compare themselves or imitate the normal people.