[vishnu]

These days, I don 't know if it was Johnny Ive or whoever, but someone at Apple, someone who had (or has) high level decision making authority, forced the system designers to create Macs that are practically impossible (for end users) to upgrade or modify. As I understand it (I could be wrong) Apple even went as far as to use GLUE inside their cases!  Can anyone corroborate? But, that said, we use glue inside our data acquisition equipment, but only because we absolutely have to; high shock high overpressure test environments.