Not a metaphorical lightbulb

You know that feeling when a light burns out, and you put off changing it, and eventually you sort of stop noticing how dark it is in that corner? And then you finally do get around to fixing the problem and it’s amazing how bright it looks, how easy it is to see and work in what was such a dim place?

This isn’t a metaphorical lightbulb. That’d be super nice but for now I’m just talking about an actual bulb.