Spotting the blind spots in a group

I have just been to the Hygienist today for a routine scale and polish. At the end of my appointment the Hygienist took time to tell me which areas of my mouth are showing the most plaque build up, because I am missing them in my routine teeth cleaning.

This got me thinking about how we all have blind spots, and one of the useful roles a facilitator can fulfil is in highlighting the blind spots for a group, in service of developing the group. I have even seen this play out when a group works with the same facilitator for a long time, the facilitator can become part of the system and less able to see the blind spots. There can be power in bringing in a colleague with a different perspective, to help the group see things they may be missing.