 You can use that spec to get bids from qualified contractors, and you'll know that they're all going to be sort of bidding apples to apples. The problem is if you just call a contractor and say, build me a retaining wall, everyone's going to build it slightly differently, and it's going to be hard for you to figure out what's the best choice because the guy that's the cheapest may not be doing the best job or using the best materials. You follow me? Mm-hmm.