(A) Photos show KO's responses toward STO's Ki in the indoor experiments. (For 2 m experiments) A1, before Ki was sent; A2, after Ki was sent. (For 20 m experiments) B1, Ki was sent; B2, after Ki was sent. (For the glass reflection experiments with KO) C1, STO sent Ki toward the mirror; C2, a glass mirror (20 × 30 cm) was fixed on the table; C3, before Ki was sent; C4, after Ki was sent to the mirror. (B) Photos show responses of the Ki-reciever (MH) and the mirror-holder (TM) to STO's Ki. A1, STO on the right side of the picture sent Ki toward an acrylic mirror (40 × 55 cm) held by TM in the middle. The Ki-receiver (MH) is standing on the left; A2, After about 1.8 s, MH lost a balance; A3, MH started running backward; B1, STO sent Ki to the mirror; B2, As long as TM held the mirror, TM did not feel anything even though MH ran backward; B3, If TM did not hold the mirror, TM fell down on the ground when STO sent Ki to TM. In this case, the Ki-receiver, MH, did not feel anything.