can we ever measure or draw any physical feature of a natural system exactly???why or why not??

im confused by this><!!! HELP PLZZ....

i will try to help u but i am no expert only a student.this might be one of those ethic questions that really have no answer at all you can only guess but no actual experiment can be done to the an official answer. again i am only a student so don't take my word on it check around i don't know if it is right just taking an educated guess