var list = Enumerable.Range(-1000,2001).Reverse().ToList();

Action a1 = () => list.Sum().Dump();
Action a2 = () => { list.Sort(); list.Sum().Dump(); };
Parallel.Invoke(a1, a2);
	var list = Enumerable.Range(-1000,2001).Reverse().ToList();

	Action a1 = () => list.Sum().Dump();
	Action a2 = () => { list.Sort(); list.Sum().Dump(); };
	Parallel.Invoke(a1, a2);