How GDP became the figure everyone wanted to watch
In my confused head I always get the celebrated economist Diane Coyle muddled up with the celebrated domestic economist Nigella Lawson.
There's a good reason for my muddle. Years ago, I appeared alongside Ms Coyle on a late-night BBC Radio 2 programme hosted by Nigella Lawson's first husband, the late John Diamond.
I can no longer remember what the topic was, but I do remember the technique Mr Diamond devised to prevent the conversation lapsing into the incomprehensibly technical.
Every time one of us said something he considered to be jargon, he would halt the exchange by tapping his water glass with a neat little "ting", and we would have to backtrack and explain in words of one syllable. A very useful technique that should be universally observed.
Anyway, Ms Coyle has gone up in the world, and she is now deputy chairman of the BBC Trust. (She is also married to my colleague Rory Cellan-Jones, the BBC News technology correspondent, but that is another story.)
South Yorkshire's cutting edge technology
The Battle of Orgreave was one of the defining events of the bitter and divisive UK miners' strike of 30 years ago.
In June 1984 there were violent clashes between police and pickets at the Orgreave coking plant, near Rotherham in South Yorkshire.
Let's think about ideas
For a few years I used to open my monthly copy of the metrosexual (well-groomed and fashion-conscious heterosexual man) magazine Monocle with a mixture of quiet expectation and distinct embarrassment.
There on a big black page would usually be a big white quote from me praising somebody else's magazine.
Are most new technology products just fashion items?
A recent encounter I had with Google Glass was not, I must say, very convincing.
You will no doubt have heard about Glass, the computer in a pair of spectacles. It's an attempt to focus on the next wave of computing: the wearable, immersive stuff they were getting all excited about at the vast Consumer Electronics Show in Las Vegas at the start of the year.
The difficult art of a good brainstorm
Three men in stiff collars are at work in an office in the Netherlands in the early 20th Century, when they pause for the above picture.
One of them, on the left, is my grandfather-in-law. His father (on the right) is in charge of the business, a successful textile company employing something like 1,000 people.
Unlikely front line in the war on cybercrime
The view is quite glorious from the top of the Worcestershire Beacon: 360 degrees of the coloured counties of England fading into the distant mountains of greyer and less coloured Wales.
This is the main summit on the spine of the Malvern Hills, where one day in the middle of the 14th Century William Langland lay down to sleep and dreamed one of the greatest English poems - Piers Plowman.
Wise words from an (almost) unknown guru
What can I tell you about Mary Parker Follett? Well, she was a woman, which meant that though she was taught by Harvard professors, the university could not give her a degree.
She also uttered and wrote some of the wisest words about business life that anyone has put together.
Is digital piracy possible on any object?
3D printers are not new: they've been around for 20 or 30 years, used by designers to make rapid prototypes of products they are developing.
It's a sort of extension of computer aided design, which has so transformed professions such as engineering and architecture.
Should we fear the growth of Chinese telecoms company Huawei?
When I first went to see Huawei, about 10 years ago, I had very little idea of who the company was, or what it did.
Ten minutes in the impressive corporate display hall in the booming city of Shenzhen illuminated me. It was full of elaborate and expensive machines.
The complicated art of retail logistics
It's almost the season to be jolly interested in how things are selling in the shops.
The news media, both print and broadcasting, seem to think that how retail sales fare over Christmas is as meaningful a part of the festive season as carols and mince pies.