Embrace error: Create an atmosphere in which prudent risk taking is strongly encouraged.

Find the appropriate balance of competing claims by various groups of stakeholders. All claims deserve consideration but some claims are more important than others.

Every one of the geezers who continues to play a leadership role has one quality of overriding importance: neotony. The dictionary definition is that neotony, a zoological term, involves "the retention of youthful qualities throughout old age." It is more than merely retaining a youthful appearance, although that is often part of it. Neotony is the retention of all those wonderful qualities that we associate with youth: curiosity, playfulness, eagerness, fearlessness, warmth, energy.

The failure to find the right niche for people - or to let them find their own perfect niches - is a major reason that so many workplaces are mediocre, even toxic, in spite of the presence of talent. Leaders of great groups give them whatever they need and free them from everything else.

Create a compelling vision, one that takes people to a new place, and then translate that vision into a reality.

The capacity for "uncontaminated wonder," ultimately, is what distinguishes the successful from the ordinary, the happily engaged players of whatever era from the chronically disappointed and malcontent. Therein lies a lesson for geeks, geezers, and the sea of people who fall in between.

Great things are achieved by talented people who are absolutely convinced that they not only can but will achieve them.