The dozen eggs analogy is misleading. It asume sthat there is one value only
and that is for making breakfast. It is rather like the Helliwell System
assuming that nobody wants to no anything about tree value but visual
amenity. BUt the value of the eggs (price paid) to you for your own
breakfast might vary from the value to the B&B which marks them up 32x
(revenue earned). The value to an artist to make that egg based paint
(whatever they call it) might vary, the value to the lads who want to throw
them at unpopular politicians may be way more than price if they get their
point in the papers, a lot less if they get thrown in jail!
Tree guys may want to believe or prefer that amenity trees should be like
home-consumption market goods. Typicakky trained in the natural or physical
sciences or trhe trades and following Shigo's dictum, want to touch trees.
They want value to be like weight or color os some other constant physical
characteristic yhat can me measured. It can't. It is not that kind of
quality or characteristic.
So John is right, there is no one problem nor one value. So should we throiw
up our hands and give up? Say why bother? Let's back up a step. Why do we
bother? What is valuation about? Valuation is an aid to decison makers.
What decsion needs to be made? Who needs to make it? If we (arbs) can't get
our heads 'round that need to define the problem and put away our diameter
tapes, we shouldn't be trying to be valuers.
IMO valuation should be a specilaty. You wouldn't send the same crew out to
dismantle a huge dnagerous dead tree and to prune the 200 year old topiaries!
DIfferent skills, different personalities.
Thanks to John for reminding me about defining the problem. The literature
is very clear about all this. Lots of citations in my upcoming paper in
Arboricultural Journal.
SC
----- Original Message -----
From: Andersonarb@xxxx.com
To: UK Tree Care
Sent: Wednesday, June 13, 2007 5:04 AM
Subject: Re: putting a price on trees
In a message dated 13/06/2007 09:35:19 GMT Standard Time,
j.heuch@xxxxxxxxxxx.com writes:
I've no time to go into it in detail but you do really need to sort
defining
the problem before identifying how to solve it. There is no one solution
or
value.
You see? We start with a conundrum; the price of half a dozen free range
eggs in Sainsbury's is pretty well fixed whether you're using them for an
omelette or a full English breakfast. It doesn't change depending on why
you want
em.
Bill.
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