1 00:00:00,710 --> 00:00:03,160 That was a trick question. We wanted to 2 00:00:03,160 --> 00:00:06,240 emphasize that affordances and signifiers are quite different 3 00:00:06,240 --> 00:00:10,530 concepts. They're independent. Affordances are the possible actions 4 00:00:10,530 --> 00:00:13,270 an actor can take upon an item in question. 5 00:00:13,270 --> 00:00:16,610 Signifiers are the signal. Signal conveyed to the 6 00:00:16,610 --> 00:00:19,710 person about the possible actions. Something can be 7 00:00:19,710 --> 00:00:22,930 in affordance or a signifier or both or 8 00:00:22,930 --> 00:00:25,790 neither. It could even be a signifier of something 9 00:00:25,790 --> 00:00:28,520 but not afford doing it. The correct 10 00:00:28,520 --> 00:00:31,300 answers to the questions therefore are, the barbed 11 00:00:31,300 --> 00:00:33,850 wire. Yeah, the barbs on the barbed wire, 12 00:00:33,850 --> 00:00:38,270 they're both signifiers and anti-affordances. The danger sign, 13 00:00:38,270 --> 00:00:40,700 yeah, that's a signifier. The site of the 14 00:00:40,700 --> 00:00:43,530 high voltage line? Well, that's a signifier to 15 00:00:43,530 --> 00:00:46,890 some people, but meaningless to others. And a 16 00:00:46,890 --> 00:00:51,660 very high voltage itself is an invisible affordance. 17 00:00:51,660 --> 00:00:54,285 It doesn't afford getting near. You'll kill yourself, 18 00:00:54,285 --> 00:00:56,560 because within, but for a high voltage, if 19 00:00:56,560 --> 00:00:59,080 you're within one meter about three feet, it 20 00:00:59,080 --> 00:01:02,070 can be fatal. But there's nothing to see. It's 21 00:01:02,070 --> 00:01:05,410 invisible, so the very high voltage is actually 22 00:01:05,410 --> 00:01:10,470 at invisible anti-affordance. The doorknob. It's a partial 23 00:01:10,470 --> 00:01:13,930 signifier and an affordance. The signifier is only 24 00:01:13,930 --> 00:01:16,960 partial because it indicates where to do the action, 25 00:01:16,960 --> 00:01:21,780 you know, pushing, or pulling, or turning, but not which action to do.