At that time there was no proper proceedure/technique to evaluate the knowledge of people to check what they are capable of. Inteliggent guardians of certein kids realise what their chicldren are good at by judging their early childhood activites(which is applicable for today is well)... king buddhadasa was a legend of his own right, he investigated things of his own, observed what other elderly healers did and enhanced the levels of medicine at that time. he neither bacame doctor just because his mothers dream was to see him as a doctor nor because he wanted to continue and maintain his family dignity. but had their been an exam related to human anatomy king, buddhadasa would have got through it with flying colours for sure. what i have to say finally is, after seeing your attempts trying to inquire about something like ALs which was non existant at the time of king budhhasa, I believe your stupidity does not seem to have any bounds or limits... and if i get a example out of the most populer field of this country your argument is like saying bradman would not have an average of 99 in test cricket had he faced bowlers like wasim akram, murali, waqar etc etc .... therefore i kindly request you to refrain from asking such hypothetical questions like a downright IDIOT