Spotted today on Slashdot:
CLI is the equivalent of spoken or written language, and the GUI is the equivalent of pointing at something and grunting. Spoken/written communication is much more powerful (easier, faster, more effective) when both parties understand the language, and the idea is a complex one ("I would like a job at your pie shop.") Rudimentary communication is easier with point-and-grunt (answering the question "which pie would you like to purchase?" - you point to the one you want) If the parties don't understand the same language, complex concepts are *much* harder. Learning to communicate by pointing is easier, but the true power of communication comes from spoken/written languages.
There's a market square in the centre of Utrecht that has different markets on different days. one day on the way home there was a market stall selling bar lights, and included a couple that were combination beer taps and bar lights.
I found this Grolsch one and snapped it up, where it now takes pride of place on a window sill here. And the tap still works! I just need to get a supply of beer to hook into it.