If your prototype only has a couple of buttons (or images you can select, or whatever) - it's faster to hardcore the names and handle those cases explicitly. A

If your prototype only has a couple of buttons (or images you can select, or whatever) - it's faster to hardcore the names and handle those cases explicitly. A good abstraction requires knowing how you'll be expanding the code (e.g. will there be more images in the future? Hundreds or billions? Or will that feature Y need to be built out?). Building that abstraction right away can definitely slow you down, as you'll be fighting it a lot of the time.