using System;

using System.Collections.Generic;

using System.Linq;

public class Program

{

    public static void Main()

    {

        var guid1 = Guid.NewGuid();

        var guid2 = Guid.NewGuid();

        // Create two different lists with the same contents

        var seriesIds1 = new List<Guid> { guid1, guid2 };

        var seriesIds2 = new List<Guid> { guid2, guid1 };

        var seriesIds3 = new List<Guid> { guid2, guid1 };

        // Violates my expectations!

        Console.WriteLine(seriesIds1 == seriesIds2);

        Console.WriteLine(seriesIds2 == seriesIds3);

    }

}