Organisational amnesia

It’s amazing how much of a dependency there is on individuals writing IT systems. Reminds me of that Dilbert strip: A few weeks ago, I was trying to figure out in what happens when there are multiple promotions. (Our client is a retailer.) I mean, if there’s a phone that costs £100 and there are 2 promotions: 10% off on phones and £10 off on phones. Do you apply the 10% off first and pay £80 or the £10 off and pay £81? ...