Quite the reverse of the objection: having seen that the law that there should be ten was laid down first, we may infer without doubt that this is the most general and necessary number. For they have to be this many, no less and no more, and arranged precisely in this order just as they are, in accordance with the number ten. All the individual details are automatically included in this number. And thus we may understand what each one of them causes and contributes as part of this general law, and we will understand the general repair that arises through this path in the proper way.
Thus the number ten is not accidental: it is not by chance that the sum of all the particulars is the number ten. On the contrary, the number ten is the root of the overall government, which brings all the Sefirot to a common purpose.