A great idea on paper, but one drawback is that over time the imperfections, limitations and graininess of the original versions of a song become as much a part of the composition as the lyrics and melodies.
Emmerdale has since got in on the act, and this year, EastEnders upped the ante with its 30th anniversary "live week", an audacious idea on paper, but one that paid huge dividends.
But while that's a nice idea on paper, no one has shown that it is possible in real ecosystems.
Three ballets choreographed to violin concertos could have been a nice idea on paper but a bad one in practice.
The men who wrote the Declaration of Independence famously put that idea on paper and called it one of our "inalienable" rights.
A great idea on paper but on actual tech, a rather horrendous one.
Maybe it's one of those things that's a good idea on paper or in a brain-storming session, but doesn't translate onto the web.
"It was a good idea on paper, but this move overwhelmed the infrastructure here," said one disgruntled wife, who insisted on not being identified because she feared her husband could be dismissed.
But right now, it's just an idea on paper.
What looks like a good idea on paper doesn't always work out in practice.
The episode summed up the weekend: a good idea on paper.
