The more witnesses to an event, the more meaning it carries? What do you think?

Don't count on it.

Your assumption is that all witnesses are unbiased about everything they observe.

And that based on what was observed, enough information is available to assess the event.

It's interesting that you mention perspective because every observation is defined by perspective.

As applied in your logic, perspective is not an asset and serves to obscure rather than enlighten.

I would change from " more meaning " to more believable , as more people are witness to a happening , less likely that the happening is a fabrication of one person or just a few , but when you have thousand or so witness the same happening and all con-cure to that happening then you can bet on it's authenticity , because from witness one to witness 1000 as long as they have not meet each other to exchange info ,and the story is the same then how could you not believe in it ?

I disagree, I think it has more to do with the event itself. What was it and how meaningful it was. Now having only one person seeing it isn't good enough I admit, but I say two or more will be suffice. Perspective doesn't have to come from the person who witnessed it. Perspective gets added through word of mouth.

depends on the event...

ex. birth of a child...more meaningful when just the mother, father, and midwife

ex. superbowl...the more the merrier

This sounds right yes.

Me thinks you're right.