Question

One year four friends were discussing how to celebrate new year party in their apartment and they used terrace as their location for discussion. And the meeting started. Two members out of four members started quarrelling each other and one pushed the other from the building .The fallen fellow was severely injured but he was alive buy a miracle ,then the watchman saw him falling and asked him who pushed him and then the fallen fellow said that Ali pushed him. Unfortunately after the fellow said the sentence he died. Few moments later Cops came to enquire who pushed the fellow from the building and The watchman Said Ali pushed him. Other three friends were in shock they were still on the terrace then the cops went up to the terrace and took one of the person from the scene without any enquiry or any evidence .So how the cops know that ,that particular person pushed him from the the building

Answer 1

the emotion of that person by seeing can be identified. for example, u are standing in a public place. there are 3 persons behind. one of him bet u and when u look back, u can identify two of three is looking at the third person who beat u and he is different in expression