This rule does not imply that cost-cutting should not be tried.
这一规则并不意味着不应该尝试削减成本。
2
Note: This rule on cutting corners is optional.
说明:切开角的规则是可选的。
3
The basic thumb rule toidentify a cross-cutting concern is: If a concern is repeated across classesspread over layers / tiers, then it is a cross-cutting concern.