I am I think ok at algorithmic programming, if that is the right term? I used to play with turbo pascal and 8086 assembly language back in the 1980s as a hobby. But only very small projects and I haven't really done any programming in the 20ish years since then. So I am struggling for understanding like a drowning swimmer.

So maybe this is a very niave question or I'm just making no sense at all, but say I have an object kind of like this:

class Something : IDoer
{
    void Do(ISomethingElse x)
    {
         x.DoWhatEverYouWant(42);
    }
}

And then I do

var Thing1 = new Something();
var Thing2 = new Something();

Thing1.Do(blah);
Thing2.Do(blah);

does Thing1 = Thing2? does "new Something()" create anything? Or is it not much different different from having a static class, except I can pass it around and swap it out etc.

Is the "Do" procedure in the same location in memory for both the Thing1(blah) and Thing2(blah) objects? I mean when executing it, does it mean there are two Something.Do procedures or just one?