If you had a bug, then you didn't know what machine is doing. You think you have an idea it's doing X, while it does Z. If you have ever written a bug because y

If you had a bug, then you didn't know what machine is doing. You think you have an idea it's doing X, while it does Z. If you have ever written a bug because you should have written ++x instead x++, then you need the machine to tell you what it's doing, because it's not doing what you think. If have never ever written a bug, contact me for a job offer, I'll pay you 300% of my salary.