...in spite of your best efforts to stay focused, you've forgotten the name of the person you're shaking hands with at the moment, nor do you have any idea which of the several people in the vicinity you shook hands with 20 seconds earlier. Of course you didn't look at the face, but you ponder briefly whether you remember the sleeve, since you're sure you looked at the hand in order to reach for it. Glancing surreptitiously at local arms and sleeves (but being careful nobody sees you; it would be bad if some girl thought you were checking her out -- and even worse if some boy thought you were checking him out), you're thinking you could probably recall the sleeve, if only you had a moment of serenity. But right now everything is too busy. The puzzle is far too complicated and you know you'll never figure it out in time to do any good; just let it go. You have enough control not to panic over your lapse; instead you firmly resolve to make a fresh start and pay attention as of this moment, hoping some context will be introduced that will give you a basis of comprehending whatever is going on. You listen carefully for about 30 seconds, but you're flailing to avoid awkward eye contact. A few moments later you realize you've been staring at a light fixture, counting the bulbs and calculating the total wattage and lumens emitted, and thinking about how it might be better placed so as to distribute illumination more equitably while at the same time reducing energy consumption. That's something the host needs to know, and you're the one to tell him. For a brief moment you think you've found something to talk to people about, but then you realize you'd better keep your mouth shut. You snap out of it and find yourself shaking yet another mysterious hand, and the cycle begins anew.