My plan so far, is to extend the stealth article. This will possibly extend to an AI article, something I'm surprised not to find in here. Here's my illustration of stealth gameplay. Let me know what you think.

Steely Stan crouches behind the crate. Peeking around its side, he sees an evil dude standing twenty feet away near one of the pillars that keep the roof of this parking garage up. Evil dude is lighting a cigarette. Filthy habit. It's going to kill him someday. Stan draws back out of the line of sight, and considers his next move.
The evil dude will definitely see him if he goes for the doorway now, but once there, it's smooth sailing through the dark corridor beyond. Oh well, better go prepared for the worst. Reload time. Just as Stan finishes reloading the silenced 9mm, he realizes his mistake. The sound of steps on concrete. They're closing in. Dammit. Never make noise this close to the evil dudes. They always hear. The steps sound few and far between. Hesitant, uneven. 'He hasn't seen me yet. I can still get out of this', Stan reassures himself.
The evil dude comes to a halt on the other side of the crate, scratches some body part and mutters 'Oh well, must've been those damn rats again'. Stan can almost hear him shrugging. As evil dude walks back, he takes another hit off the cancer stick and embarks on a coughing fit of epic proportions. His back is turned, he is bent over, red-faced and distracted. 'This is as good a chance as I'm gonna get'. Stan holds his breath and runs for it.
'I think those cancer sticks actually saved your life, evil dude', Stan reminisces, as he slips undetected and grinning into the shadow beyond the dark doorway.