We had a plan, we had a scheme
We thought it rather prudent
It was an algorithmic dream
But alas, it went quite mutant

How could we know it wouldn’t work?
It’s not like we were warned
But when set free, it went berserk 
That naughty sum was horned

On paper it looked tame enough
A dependable safe bet
But the boffins’ gentle bit of fluff
Was to be no teacher's pet

It looked so sweet on a spreadsheet
A splendid calculation 
Yet it stomped around with real-world feet
Demanding reexamination

We’ve caught the bloody thing at last
It’s caged and we hope to learn
That yet again we’ve been outclassed 
So grade our neat u-turn

Based on this story -https://www.bbc.co.uk/news/education-53923279