11Beforehand cushioning
Prepare emergency means beforehand to compensate for the relatively low reliability of an object.• Magnetic strip on photographic film that directs the developer to compensate for poor exposure
• Back-up parachute
• Alternate air system for aircraft instruments
This principle is proposed to solve the following contradictions:1/27 1/34 2/34 5/13 7/27 9/27 10/11 10/34 11/33 13/5 14/27 14/32 14/34 15/27 18/28 19/27 22/27 27/4 27/9 27/12 27/14 27/18 27/19 27/21 27/22 27/28 27/29 27/34 27/38 28/27 28/34 29/27 30/35 32/13 32/34 32/37 34/1 34/2 34/7 34/10 34/14 34/15 34/27 34/32 34/36 35/30 37/13 37/32 38/27