Well thats cause for some reason the option to study them is not really given any notice. I don't know about Japan, but in the US prisons are run by friggin Corporations. One here in Oklahoma had a gripe with a local phone company and was threatening to shut down so the local gov stepped in and made the phone co fix the problem...the prison shuts down in 3 months. Prison (here) isn't about the prisoners or society. Its about making money. Prisoners in one state are contracted to pack futons, and in another take calls for magazine orders. Its utter bullshit. Try and make a living and the gov't and industry shit all over you...break the gov't law though and you get 3 squares a day, a roof, clothes, a college education, cable TV, medical, dental...all for FREE!!!
And my friend wondered why I wasn't worried when we got in serious with the law one time...