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| author | fenn <fenn@sdf.lonestar.org> | 2014-05-14 02:56:05 -0500 |
|---|---|---|
| committer | fenn <fenn@sdf.lonestar.org> | 2014-05-14 02:56:05 -0500 |
| commit | cabc015808e0b7312719a8bce349218a5afd6079 (patch) | |
| tree | 6dc18c38648ef08cb14ea96e2ca65aef271e8e26 | |
| parent | 56bf9ac911733fd53c8e3e6da91af4a151bfe650 (diff) | |
| download | diyhpluswiki-cabc0158.tar.gz diyhpluswiki-cabc0158.zip | |
marking out the bounds of the build/buy problem
| -rw-r--r-- | projects/heuristics.mdwn | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/projects/heuristics.mdwn b/projects/heuristics.mdwn index 6d5a172..40b4f87 100644 --- a/projects/heuristics.mdwn +++ b/projects/heuristics.mdwn @@ -4,6 +4,13 @@ Here are some words about general constraints in projects. When should the part be locally built versus when should the part be bought and shipped? Note that there are shipping time and shipping cost constraints. +upper and lower bounds: +- buy X when you think "I can't even get the materials to make X at that price" +- make X when you cannot buy X at any price + +it may be helpful to modify your concept of X so that it can be purchased. +conversely, it may be necessary to modify X so that it can be made with the tools you have access to. + # prototyping Every prototype has some resource cost, although the cost per unit may go down because of economies of scale. |