The more innocuous the modification appears to be, the further its influence will extend and the more the design will have to be redrawn.

Related:

• The more innocuous the modification appears to be, the further its influence will extend and the more plans will have to be redrawn.
  Second Law of...
• Information necessitating a change of design will be conveyed to the designer after and only after the design is complete.
  (Often called the 'Now They Tell Us' Law) Fyfe's First...
• It is usually impractical to worry beforehand about interferences -
  if you have none, someone will make one for you. Fyfe's...
• If, when completion of a design is imminent, field dimensions are finally supplied as they actually are,
  instead of as they were meant to be, it is always simpler...
• In simple cases, presenting one obvious right way versus one obvious wrong way,
  it is often wiser to choose the wrong way so as to...
• Information necessitiating a change of design will be conveyed to the designer after -
  and only after - the plans are complete. (Often called...
• If, when completion of a design is imminent, field dimensions are finally supplied as they actually are -
  instead of as they were meant to be - it is always...
• old fart n. Tribal elder. A title self-assumed with remarkable frequency by (esp.) Usenetters who have been programming for more than about 25 years;
  often appears in sig blocks attached to Jargon Fi ...
• Spring appears,
  and we are once more children...