Thanks Richard for your thoughts, especially

I suppose you could summarise it as
- the value perspective asks
"what does this value MEAN?"
- the object perspective asks
"what does this object DO?"

[I usually formulate it as the understanding focus vs the doing focus; probably not much difference]

However when you say

and has as its characteristic activity using a debugger.

I am amused. In a sense it is correct I guess but it still seems a tad harsh.