Life in the Undergrowth

I've seen several of David Attenborough's documentaries and have always found myself describing them with many superlatives. Whilst this documentary presented some marvellous filming and was quite informative, I was very disappointed with David's direct interaction with our fellow creatures in the undergrowth. I believe the most important tenet in documenting wildlife is to take a purely observational role without interacting. If something cannot be shown without interfering then it should not be shown. Yet in this documentary we have David picking up a horseshoe crab, touching insects with pins, picking up worm cocoons. I expected much better.