orcad tutorial 中的某句不明白，求解

最近在看那篇老外写的 orcad tutorial 文章，原文中有这么一段：
 ……

There is one other thing that needs to be done with regard to drills. Some board shops have limitations on the sizes of drills. The board shop we are using for this project offers only 16 drill sizes[1]. They have programs that will scan your Gerber files and automatically adjust the drill sizes for you, but to avoid any problems it is wise to give them files with the correct sizes in the first place. This way you can be sure that your board will be manufactured exactly as you send it. It is also a good practice to consolidate drills anyway. In this design, we might try to adjust the footprints so that the 34 and 35 mil drill sizes are the same. The board shop will only have to use one drill bit, and this will save money.

[1] For this design we are using PCBExpress, www.pcbexpress.com.

我的翻译：

另外对于钻孔还要考虑一件事情。有些电路板厂商会对钻孔的尺寸有限制。例如负责本设计项目的电路板厂商只能提供 16 个钻孔尺寸[1] 。他们的程序会扫描你的Gerber 文件，并且自动给你调节钻孔尺寸，但是为了避免出现问题，它又会在一开始就“聪明”的给出正确的尺寸。这样你就会确信你的电路板是严格按照你的设计进行生产的。无论如何，统一钻孔是一个良好的习惯。所以在本设计中，我们可能要尽量调整封装，让34和35 mil的钻孔变得一样。这样电路板厂商只需要使用一个钻头（drill bit）即可，我们也可以节省一笔钱。

[1] 本设计中，我们使用 PCBExpress, www.pcbexpress.com.

。

问题：
主要是对“it is wise to give them files with the correct sizes in the first place.”这一句不是很理解。翻成“ 它又会在一开始就“聪明”的给出正确的尺寸”感觉有点怪。

请知道的朋友解答一下，万分感谢！

但是为了避免麻烦，更明智的做法是一开始就给出正确的尺寸。

嗯。谢谢楼上

就是这个意思，很贴切