Tribalism reflects strong ethnic or cultural identities that separate members of one group from another, making them loyal to people like them and suspicious of outsiders, which undermines efforts to forge common cause across groups.

Organizational structures that allow divisions and departments to own their turf and people with long tenure to take root creates the same hardened group distinctions as Congressional redistricting to produce homogeneous voting blocs - all of which makes it easier to resist compromise, let alone collaboration.

The way innovating companies are designed leaves ambiguities, overlaps, decision conflicts or decision vacuums in some parts of the organisation. People rail at this, curse it-and invent innovative ways to overcome it.

The boomers' biggest impact will be on eliminating the term 'retirement' and inventing a new stage of life... the new career arc.

The middle of every successful project looks like a disaster.

I've found that small wins, small projects, small differences often make huge differences.