In the paragraph:

From the living room I listened to them talking in the office.
'Were not you friends?' asked Mom.
'Some time ago.'
'First your perpetual motion machine and now this.'
'Gismo-itis,' she said.
'Please,' Papa said.
'So you really do not...'
'Like I said...'
'Anyway, Karl.'

The mother says "Gismo-itis" and not "gismo-it". She is much more critical than the edit imagined.