问为什么我的循环与"&&“操作符一起工作，而不使用”\“或"^"？

EN

struct multivar
{
    public int userInt;
    public string userText;
}
class Program
{
    static void Main(string[] args)
    {
        multivar structHolder;
        string shrinkRay = "";
        while ((shrinkRay != "nothing") || (shrinkRay != "something"))
        {
            Console.WriteLine("What did you eat today?\n1)Nothing?\n2)Something?");
            structHolder.userText = Console.ReadLine();
            shrinkRay = structHolder.userText.ToLower();
            if ((shrinkRay != "nothing") || (shrinkRay != "something"))
            {
                Console.WriteLine("Please input a valid response such as \"Nothing\" or \"Something\".");
            }
        }