Hi, regarding the simple project with 1 led and 1 resistor, why isnt the resistor on the positive side of the led connection? I thought current flows from positive to negative. If this is correct then to my mind the current is going directly to the led at 5v then getting reduced afterwards before going to gnd. This doesn't make sense to me as I thought it has to be reduced before it hits the led to stop it from frying. It obviously works but my understanding of why it works on the negative rather than positive is clearly wrong. Can someone explain please?