It is an important rule in Big Brother that the “social game” of a player can often be more important than their competitive play. The ability of a player to weave their way through the House and be seen as an asset and ally to as many people as possible can make or break a game. When a player develops these alliances, they can walk through the game and win the entire thing – Dr. Will Kirby is a testament to this. When someone forgets this and strays from playing a strong social game, they can burn out spectacularly (Witness the spectacular flameout of Shelly’s game in BB13).
In the case of evictee Donny, the lack of a strong social game and weak strategic thinking were glaring weaknesses that could not be overcome by strong competitive play and a good personality.