Strange... "Nbdev is a system for something that we call exploratory programming." but no citation... the phrasing suggests this is something they believe they've come up with a name for?
I coined the term - and it turns out someone else did too, for something else. So be it. If someone else can think of a better term that's never been used before, then I'll happily use that instead.
The earlier usage mentioned in Wikipedia is entirely uncited there however, and seems to have only been used in one academic project AFAICT.
"In some cases the estimates may be obvious. Perhaps the story is similar to others that have already been completed. In other cases the story may be very difficult to estimate and may require exploratory programming."
I agree - it's what made me raise an eyebrow... However, based on their comment above, the lead author of Nbdev believes to have coined the term.
My opinion is that due diligence and attribution are important. If I believed I'd coined a new term, I'd check first. Mistakes are easy to make, but when highlighted, perhaps corrections are more appropriate than negotiating with the person highlighting them:
From the lead author (jph00):
... If someone else can think of a better term that's never been used before, then I'll happily use that instead.
In electronics, we call it Breadboarding, and the results are expected to be temporary by all involved. Breadboarded circuits generally are not stable over time or movement.