Its more than an age gap.

As with all things the young and the old seem to be fired with different rocket fuel as their  trajectories go into different orbits. 
The vigour of youth fires them off in a straight line with little time to reflect on the view as they hurtle along. 
The oldies are in a different phase of their travel they have lost their Umph the rocket is beginning to splutter and Gravity is beginning to take over.
Simple things which to an oldie would mean a world of touch and see has been replaced with an algorithm and a set of virtual opportunities which act as a screen to filter the real world from us. No longer the "the reliance on past experience" rather the need to understand layers of computer driven segmentation which if you know the password all will be revealed.
The world of the oldie collides with frustration as his reflection of the path he trod yesterday to get to a specific destination, somehow has been altered by a 'bit' or a 'byte' and he is stymied. Call the technician !
Now the technician, usually young, he/she comes from the "other" camp they know it all, no need for the historical perspective, "its the future man"!!
The collision often leaves the older person bruised. His sense of maturity and the importance he has built into his natural self esteem is ruined, he has to grovel, not an easy thing to do when in many cultures, his age would ensure he is held in esteem.
The technician meanwhile knows his strength and although he hasn't felt the true corrosion which life can exact, he is confident that when the train hits the buffers, the oldies will be there to pick up the pieces !!!
The Oldie remembers the special place his parents and his grandparents had when he was growing up, in reality how "all" elderly members of society were cosseted as special.  He finds it a little galling to find he is now evaluated with the members of a kindergarten.