CONSTANTS

Richard's Smart Home is called Camelot.
When the Smart Home addresses him, it calls him King Richard.

Understanding PHP Constants

SMART_HOME_NAME: This constant stores the name of Richard's (my) Smart Home, "Camelot". This value remains the same throughout the script.
HOMEOWNER_NAME: This constant holds the name that the Smart Home uses to address Richard (me) as "King Richard". This value is also fixed and unchanging during the script.

NOTE: I'm not vain. I just really love fantasy and am fascinated by King Arthur, Merlin, Camelot, and the likes. Besides, they say a man's home is his "castle."