exception to the rule that facts must be established through evidence

17. Is there any exception to the rule that facts must be established through
evidence and the decision making authority must not import personal
knowledge into the case?
Irrefutable matters of common sense and laws of science do not require any
evidence. For example, it is a matter of common sense that capacity of a super
deluxe bus cannot be seventy five. An Inquiry authority may reject evidence to the

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effect that a person travelled in a super deluxe bus carrying eighty passengers from
Delhi to Kanyakumari. There is no need for controverting the above statement
through the crew of the bus or another witness who had seen the above bus.
Similarly an Inquiring Authority can conclude that any object thrown above has to
come down. There is no need for a physics professor to come and testify about the
law of gravitation