Today I came to the notion of a "technical" Domain Model, by a smart colleague by the way. Domain Model being synonym to "Model of a Domain" inherently is pure business, although I conceal that certain properties - the way it was modeled - reflects technical constraints. I already was able to optimize the performance of a system by optimizing the Domain Model. But no Aggregate, no Entity, no Relationship in a Domain Model can be represent a technical term. This is easily arguable for the core entities like Customer, but why should the Business Concept of a Searchquery not shaped by inquiring the analyst/business owner defining the business of the queries: do they have subqueries, would they be savable, do we have special operations on queries? The same goes for legacy boundaries. What means it interact with the legacy FROM BUSINESS point of view. If its important its business, not technical. That's what shapes the difference between an iPhone and a Smartphone.

What else should I say?

[...] he said he has wife and seven kids to support [...] www.youtube.com

My collegue is able to write emails a bayesian filter recognizes as Spam.

Pre-WWI Cambridge was a highly influential intellectual center in the first half 20th century with strong mathematical bias, due to people like Bertrand Russell, Ludwig Wittgenstein and John Maynard Keynes. The later, famous for his leftist economic theory compiled in the opus magnum 'The General Theory of Employment, Interest and Money'; did not only ground Roosevelts 'New Deal' or the European social market economy, but contributed with his 'Treatise on Probability' to modern probability what is now known as The logical Theory. Keynes believes that that logical relations can be applied to probability events, so that fundamental problems of induction in probability (e.g. a black swan) can be solved. Probability is a degree of partially entailment of a hypothesis. From the observation of all swans, they were all white, follows partially and to a certain degree that all swans are white. Interestingly Keynes does not believe that the degree of entailment is always computable, on the contrary probabilities might not comparable at all: .

0 represents impossibility, 1 certainty, and A a numerically measurable probability intermediate between 0 and 1; U, V, W, X, Y, Z are non-numerical probabilities, of which, however, V is less than the numerical probability A, and is also less than W, X, and Y. X and Y are both greater than W, and greater than V, but are not comparable with one another, or with A. V and Z are both less than W, X, and Y, but are not comparable with one another; U is not quantitatively comparable with any of the probabilities V, W, X, Y, Z.

Geeky!

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