I think, Mr. Cavendish, said Poirot gravely, "that you would do well not to buoy yourself up with any false hopes. 
"Mr. Cavendish, you shouldn't boost your spirit with blind faith", Poirot said seriously.
Poirot said happily, "Just hold on to your faith, Mr. Cavendish"
You said that you would leave as soon as the computer was built, without waiting to hear my true name.
Kids are outside
There is nothing unique about Jamaica.
Someone is working using a welder.
There are detailed descriptions of the GPRA's requirements somewhere in the appendix.
Most were dead but one was alive.