collections of collections and relations of relations

I am constantly torn between the necessity of hierarchy in classifying data and the equal necessity to allow all things to remain miscellaneous. With the new collectionspace data structure I feel I am finding that middle ground at last. The key is allowing relationships between nodes to be freely described and extended. The one node which I feel is going to provide the most interesting use is the collection - which is sort of funny as it makes the name of our site relevant again in the context of our new knowledge base.

• node
  
  
  
  • person
  
  
  • place
  
  
  • thing
    
    
    
    • record
    
    
    • shirt
    
    
    • book
    
    
    
    
  • concept
    
    
    
    • belief
    
    
    • date
    
    
    • number
    
    
    • measurement
      
      
      
      • mass
      
      
      • weight
      
      
      • volume
      
      
      • pressure
      
      
      • force
      
      
      • distance
      
      
      • time
      
      
    
    
    • color
    
    
  
  
  • collection
    
    
    
    • group of people
      
      • band
    
    
    • group of things
      
      • want list
      • have list
    
    
  
  

I feel this is a good start