Why is it that when you go to the hospital to see a doctor, there are so many items to check? Doctors do not seem to have to use their brains, are medical equipment in the doctor, the ordinary people

Why is it that when you go to the hospital to see a doctor, there are so many items to check? Doctors do not seem to have to use their brains, are medical equipment in the doctor, the ordinary people can afford to see it? This is actually a common problem in hospitals nowadays, as the profit on drugs is less, the cost of inspection is also a means of hospitals, often an x-ray can be solved even to use ct Of course, due to the increase in medical accidents nowadays, so that the doctors are also afraid of medical accidents, so in order to save energy to the symptoms of the relevant can do all the tests so that even if something goes wrong can also be to reduce the responsibility

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