That's a silly analogy. The effect of a logo is the impression on people. The layout of a city has concrete effects that people will notice regardless of whet

That's a silly analogy. The effect of a logo is the impression on people. The layout of a city has concrete effects that people will notice regardless of whether they are aware of the layout itself or not. It's questionable whether an arrow in your logo that nobody notices will have any effect apart from designers talking about your logo.