I am often in a slightly hidden place at the beach  and today there was a young Arab  walking by about to grab a woman's purse and then he right before he took it he saw I was watching. So he went on some steps. Then came back to me to ask for a cigarette. I had none, and then he walked further back again and asked some girls the same question. [Normally I try to give to whom so ever asks from me something, but in fact I had no cigarette. ] Then after that it occurred to me that that guy was looking for people's stuff to steal. That is why he was about to grab that purse.. So I went over to the police to let them know there was someone around looking for trouble.

I am also still pondering that answer of Rav Shach for the Rambam in Sota [chapter 1 halacha 3] that is related to the gemara in nida page 2 and i am about to give up. i just can not see  how the Rambam can decide like two teachings that the gemara itself says contradict  each other.