@JusticeInMed @thehouseofpod No, I'm describing randomization in an environment where people aren't masking.
Arm 1: Masking
Arm 2: Whatever people are already doing (mostly not masking)
People are assigned randomly (perhaps by classroom, etc.)
No one is being told not to mask.
@JusticeInMed@thehouseofpod No，我描述的是在人们不伪装的环境中的随机化。
第1组：掩蔽
武器2：无论人们已经在做什么（大部分不是掩蔽）
人员随机分配（可能是按教室等）
没有人被告知不要戴面具。