What gives people feelings of power:
Bar graph
Money: [][][][][][]
Career: [][][][]
Status: [][][][][][][]
Calling your cat and he actually comes: [][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][]
(Picture of black cat)
,_ _
|\\_,-~/
/ _ _ | ,--.
( @ @ ) / ,-'
\ _T_/-._( (
/ `. \
| _ \ |
\ \ , / |
|| |-_\__ /
((_/`(____,-'
Clicker is just very loud/obvious and speeds up the initial training, but no you don’t have to use it. I enjoyed seeing my cat would come zooming from the complete opposite end of my house though, lol