So I am reading part of this and have come to a part where he says,

"“Consider the machine specified as follows. . . . Will this machine ever answer ‘Yes’ to any question?” The dots are to be replaced by a description of some machine in a standard form, which could be something like that used in § 5. When the machine described bears a certain comparatively simple relation to the machine which is under interrogation, it can be shown that the answer is either wrong or not forthcoming. This is the mathematical result: it is argued that it proves a disability of machines to which the human intellect is not subject. "

This is taken from Computing Machinery and Intelligence by A.M Turing 1950.

I am having a hard time figuring out why any digital computer will either be wrong or not forthcoming.

No search of the internet or this board seemed to have an explaination geared toward someone who is just having trouble wrapping their noodle around this question.

thanks!