NPD Tales

Ideas Thoughts and Comments on Product Development

Lean Product Development – Batch Size

In an earlier post I introduced the idea of cadence in product development activities.  Of course if you’re going to introduce the concept of reviewing work on a regular basis instead of event or content driven reviews you need to think about the time period between the reviews or in lean manufacturing parlance the batch size.

Obviously there is a balance to be struck between reviewing a large amount of work (with the associated risk of amplification of errors) and having engineers spending too much time reviewing their work.

One important factor to be considered is that frequent regular reviews become a simple low overhead task compared to infrequent irregular reviews where there is a tendency to settle down for a day of coffee, biscuits and talking.  In general, your batch sizes right now are likely to be much larger than optimal.