By Andrew Shirley, FW's man in the Gambia
Goose bumps prickle my arms despite the midday sun burning my mad dog skin.
Not the tell-tale signs of a malarial fever, but the realisation that some of Concern Universal's work is really paying off.
This morning some of us debate whether aid really works, whether we really should be here at all. Nobody is sure.
Now I know - in at least some cases - the answer is most definitely yes.
A former student of the college I visited yesterday explains how he has used his new knowledge to improve yields and create a profitable irrigated vegetable "garden".
This has boosted his income at least five-fold and allowed him to buy a new water pump - not even a foot-powered one, a proper petrol powered chugger.
And then the moment comes. He says he is already planning how he will use a proportion of his future profits to invest in the garden.
Planning. A simple word but to hear a farmer here utter it with such conviction gives us real hope that the knowledge transfer process started at the college is really working.
Africa isn't short of plans. Many people from outside the continent plot to control its destiny. What it needs is more people like this farmer to make plans for themselves.
And if we can help them to the position where they can do that on their own, something must be working.