请教: how do you know " the value can only go down"?
所有跟帖:
• Check population profile. -borisg- ♂ (77 bytes) () 11/07/2018 postreply 08:55:22
• thank you for the thoughts. It helps. -keeplooking- ♂ (0 bytes) () 11/07/2018 postreply 09:52:57
• Check population profile. -borisg- ♂ (77 bytes) () 11/07/2018 postreply 08:55:22
• thank you for the thoughts. It helps. -keeplooking- ♂ (0 bytes) () 11/07/2018 postreply 09:52:57