LA task

I feel that the multiple intelligence test's concept is very good but i feel it is extremely unreliable as if there are many instances that the results are wrong
1)if the person intentionally changes his answer to increase his score

2)If the person unintentionally clicks the wrong option(This happens very often:You click on one option thinking about something,but u forgot about another thing that may affect the answer[in other words,you answer from one single event not considering the other events that you may have forgotten])
3)If you don't really know which choice you belong to and you guess(It may be wrong)
Even (2) alone is enough affect everybody,as it is impossible to remember everything you have done and felt.Therefore,I feel although the multiple intelligence test has a sound concept but it is largely unreliable.