I want to be a little careful here, but it seems like Apple has a lot of logic board failures. Do I have hard evidence? Absolutely not because I don't have access to repair/failure figures. If I paid a LOT of money for a laptop and it fails then I would be very upset. I purchased Applecare for my 2011 MBP 13 just because of the anecdotal and actual incidences of logic board failures. If my logic board fails just after my Applecare expires, then there is really something wrong with the manufacturing/design process. I expect a laptop to last more than 3 years.