So there was an inspection from government for our bank's IT security. I gave a tour to our server and security systems. I threw all possible acronyms as much as I could remember. Inspector nodded and noted down never uttered a word.

Finally, he breaks his silence, looking at a device he points out and says "What's that ?"

I look at the device then stare at his face back again at the device and to his face I reply "That's AC, Air Conditioner".

software development stages