I'm not sure I follow. 2 * 3 * time.Second is the same whether you group 2 * (3 * time.Second) or (2 * 3) * time.Second (namely, the implicit grouping under le

I'm not sure I follow. 2 * 3 * time.Second is the same whether you group 2 * (3 * time.Second) or (2 * 3) * time.Second (namely, the implicit grouping under left-associativity). You wouldn't normally write time.Sleep(time.Second * time.Second) because your units wouldn't work out. (Apparently you can write that in Golang; it's just very sketchy and results in a 30-year sleep.)