The gap between the last exercise and the first Tuesday

Capability at the end of a course and behaviour at work three weeks later are two different things, and the industry routinely treats them as one.

At the close of a session a participant can usually do the thing. They have just done it, with support, in a setting arranged to make it doable, surrounded by others attempting the same. That is a real demonstration and it should not be dismissed. What it is not is evidence about the following month. The conditions that made the demonstration possible have all been removed by the time the person is back at their desk or on the floor. There is no facilitator watching, no colleague at the same stage, no protected hour, no materials laid out in order, and no permission to be slow while getting it right.

The gap between those two states has a shape worth describing. Immediately after training, confidence is high and competence is fragile. Within days the fragility asserts itself: the first attempt is clumsy, takes longer, and produces a worse result than the familiar method. This is entirely normal and entirely predictable, and it is also the point at which most people quietly revert. Nobody decides to abandon the new approach. They just deal with a queue, and the old way is what is to hand. A fortnight later the whole thing has the character of a pleasant memory rather than a change in practice.

The practical consequence is that a training design which ends at the last exercise has ended too early. The session has produced someone who can do the task under favourable conditions, and the workplace requires someone who will do it under unfavourable ones. Bridging that is not a matter of more content. It is a matter of arranging for the first real attempt to happen soon, to be expected by somebody, and to be allowed to be slow. Almost nothing in the standard commercial shape of training makes room for that, because the standard shape stops at the door.