Related:

• If you put garbage in a computer nothing comes out but garbage.
  But this garbage, having passed through a very expensive machine, is somehow enobled and none dare criticize it....
• If you put tomfoolery into a computer, nothing comes out but tomfoolery.
  But this tomfoolery, having passed through a very expensive machine, is somehow enobled and no-one dare criticise it....
• GIGO: Garbage in garbage out.
• GIGO: Garbage in, Gospel out.
• TOG: Take Out Garbage
• Garbage In -- Gospel Out.