He spoke out against the idea of "white" and "black" as distinct groups, claiming that these distinctions ignored the scope of human diversity.
他公开反对将“白人”和“黑人”划分为两个不同群体的观点，并声称，这些区别忽视了人类多样性的范围。
2
The number and scope of the levels are well defined: we have four distinct levels; company black box, system black box, logical design inside the system, physical implementation.