u38cg2

If you can create point sources of sound, you could simply use phasing between ultrasonic frequencies to control sweeps, with the added advantage that you don't need any detailed knowledge of physical layout.

Stress induced normative behaviour is a thing. Someone retrieving their hand luggage isn't (usually) deliberately being a dick - they're just not functioning normally. They're getting off a plane. What do you do when you get off a plane? Check you've got everything with you.

You mean hedge fund investors. Hedge fund managers do very well for themselves with your money.

On physical attractiveness: it is 99% physical fitness, good grooming, and a stylish wardrobe.

On relationships: look for friendships, not sex.

Step 1: pop to 7-11, buy bumper pack of kool-aid sachets
Step 2: return to wilderness, start laying kool-aid sachets
Step 3: await rescue