Good evening Isaac! When we talk about possibilities about one thing happens, there are three degrees of effectiveness : The most possibility is expressed by *could*, *may* is used to express like *maybe* yes or no, and the less possibility is for *might*. Suppose this example I use with my students: * You have lost your keys and cannot find them* So, You could leave them at home. (almost sure) // You may drop them on your way here// You might lose them under the trash bin at the hall of my entrance in my building (so remote chance)... Now, I ask you : Have you got it clearer? I hope so😉. Let me know please!?? Good night,!