School teacher has a bag of hats

[idontthinkright]

(not trying to act stupid ) The white hats often reflects heat,while the black hat absorbs heat,if he was supposedly smart(like Njorl said),he would have taken the time when the teacher was asking the students to identify the hat on his head by feeling the heat,and since there isn't any calculations and a probability of 4/7 3/7,i can say that his hat was black,by then he would have noticed his head felt really hot.(again this is also an assumption)

 

[The Bob]

(not trying to act stupid ) The white hats often reflects heat,while the black hat absorbs heat,if he was supposedly smart(like Njorl said),he would have taken the time when the teacher was asking the students to identify the hat on his head by feeling the heat,and since there isn't any calculations and a probability of 4/7 3/7,i can say that his hat was black,by then he would have noticed his head felt really hot.(again this is also an assumption)

Indeed it is an assumption so for you I will say that they cannot feel their hats and so he cannot tell. The room is also 14 °C so in the (lets say) 20 minutes they are in there there is no way a change in temperature is noticeable. Plus unless the pupil knew the material of the hat and what a white hat was like to wear in those conditions so if he was wearing a black hat he would not know the different.

The Bob (2004 ©)