This type of memory loss that Simon is suffering from can be Transient global amnesia (TGA).
This type of memory loss occurs in adults due to old age. The person will not be able to remember what happened in the recent past and then they try to guess like Simon is trying to do. Another type of memory loss is Post-traumatic amnesia (PTA).
These types of memory loss are common during old age and may happen after some operations like the case of Post-traumatic amnesia. The patient with memory loss should not try to put too much effort while remembering as he may feel agitated that he is not able to remember. This agitation may worsen his behavior with others and with himself.
Learn more about Transient Global amnesia from:
https://brainly.com/question/13082400
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