|"Hand of Bede" from Bodleian Library, Oxford, |
MS Digby 56, f. 165v (12th century)
You can listen to the full programme here - my short essay and interview start at 22 minutes. (You can also download Free Thinking as a podcast on iTunes.)
I also recorded this spur-of-the-moment clip, showing some numbers on my fingers. A bit clumsy, but I only got one try at it!
If you want to read some more about finger-counting and hand-diagrams in the Middle Ages, I recommend this blog post by Irene O'Daly. You can also read Bede's The Reckoning of Time in a great edition by Faith Wallis.