There's is a famous quip:  "A lot of people in business say they have twenty years' experience, when in fact all they really have is one year's experience, repeated twenty times". 

Something to consider when you or someone you work with speaks of their "vast experience". 

Don't be that person.  If you are going to speak of your "experience"... make sure you ARE NOT talking about how ignorant you've been for the past 20 years, but rather speak to your ability to be open minded, innovative, compelling and forward thinking. 

There's a reason why the dinosaurs are dead.

Also, if you are on the young end of experience, accept that you don't know everything.  Listen to the dinosaurs, be open minded and learn from what they have to say.  From their knowledge you might be able to create a fresh approach that they were not able to see due to their "it's always been this way" attitude.  Fresh perspectives can peel away layers (years) of complacency. 

Looking and learning from the past is fine-just don't live in it.  

Embrace that you don't know everything and neither do they.