APAD: You Scratch My Back and I'll Scratch Yours

One of many manifestations of the reciprocity principle. In APAD, we've learned

'one good turn deserves another.' Back-scratching, however, seemed to carry a

negative shade.

所有跟帖： 

• 对啊，两个人各拿一个一米长勺子，谁都喝不到自己勺子里的汤，互相喂都能喝到汤 -移花接木- ♂ (0 bytes) () 08/05/2023 postreply 11:48:56

• Nice. Very visual. -7grizzly- ♀ (0 bytes) () 08/05/2023 postreply 12:13:56

• 一米长的大勺子，为了contact isolation？：） -妖妖灵- ♀ (0 bytes) () 08/05/2023 postreply 18:52:09

• 抱团取暖：） -妖妖灵- ♀ (0 bytes) () 08/05/2023 postreply 18:51:20