"Non-bricklayers can make relatively accurate comparisons between two wall-building projects. "
I would dispute the 'relatively accurate' assumption. My father works in construction and it's often the case that what me (as a non-construction worker) sees as a beautiful kitchen, he'll see as a nice-looking kitchen that's been cheaply made with quality and craftsmanship problems.
I would imagine that a bricklayer has a better chance of telling you whether a wall is likely to start cracking within five years than your average person off the street would, for example. You're assuming that non-bricklayers would know what to look for to assess the quality of the wall properly or that brick walls are so simple that any untrained person off the street could figure out what all those hidden factors are.
I think this is actually the exact same thinking mistake that people make when they assume that programming must be easy. It's seeing only what's on the surface and not realising there are deeper things (a previous poster mentioned 'hidden processes' when talking about laying down a hardwood floor, which is exactly what I mean here).
Hmm. I feel misunderstood. Let me try to cut across what we're both talking about and see if we end up at the same place:
Brick walls have a very high level of observability. A non-bricklayer can look at a wall and tell if it fills the space it is supposed to fill, if the wall is obviously crooked or warped, if bricks are missing, and if mortar is missing between bricks. They can do all of this with very little expertise because they can physically inspect the wall and they have also seen many walls before and have internalized some norms for walls.
Compare this with a non-programmer's experience with software. All they see is the user interface, which is usually a very small part of the whole. Software has a very low level of observability.
Brick walls - typically - are also very simple systems when compared to software such as what is described in the original article. Lower complexity combined with a high level of visibility and broadly shared expectations means that lay people can make many more accurate judgements about a wall, the progress of a wall, the quality of work being done on a wall, etc. without being experts on wall building or brick laying.
This is not to take away from expert tradespeople or diminish their value. It's just a completely different situation which I believe was the intent of the original analogy.
I would dispute the 'relatively accurate' assumption. My father works in construction and it's often the case that what me (as a non-construction worker) sees as a beautiful kitchen, he'll see as a nice-looking kitchen that's been cheaply made with quality and craftsmanship problems.
I would imagine that a bricklayer has a better chance of telling you whether a wall is likely to start cracking within five years than your average person off the street would, for example. You're assuming that non-bricklayers would know what to look for to assess the quality of the wall properly or that brick walls are so simple that any untrained person off the street could figure out what all those hidden factors are.
I think this is actually the exact same thinking mistake that people make when they assume that programming must be easy. It's seeing only what's on the surface and not realising there are deeper things (a previous poster mentioned 'hidden processes' when talking about laying down a hardwood floor, which is exactly what I mean here).