Affordances provide strong clues to the operations of things. Plates are for pushing. Knobs are for turning. Slots are for inserting things into. Balls are for throwing or bouncing. When affordances are taken advantage of, the user knows what to do by just looking: no pictures, label, or instruction is required.

After a five-day rest at Huili, the Red Army continued its drive northward. Passing through the Yi nationality area of Tehchang, Hsichang the vanguard troops led by Liu Po-cheng made an alliance with the chieftains of the Kuchi tribe, and managed to neutralize the Laowu tribe.]

Henry Kissinger stopped off in Kabul to show the flag for a few hours in 1974.

the onset of schizophrenia