Because they exist outside of himself, and he has no control over them, he has no way of knowing that his senses are trustworthy.
Nasiib darro se Jacfar ma laha shakhsiyad madax bannaan ee waxa haga hadba muuqaalada ay indhihiisu qabtaan, mas'uuliyaddiisa qofnimana umay kobcin sida ay aqoontiisu u korodhay. ...