[beala]

It actually does help, and the concept behind it is called pipelining [1].

Suppose there's a sink that washes and dries, and there are two people who want to use it. The second person will spend 30 seconds waiting, and 30 seconds washing/drying. So, 60 sec total.

If there's a sink and a separate dryer, the second person will spend 15 sec waiting, 15 sec washing, and 15 sec drying. So, 45 sec total. The second person gets a 15 seconds savings, because he can start washing as soon as the first person finishes washing, rather than having to "block" until the first person is done washing and drying.

[1] http://en.wikipedia.org/wiki/Pipeline_(computing)#Concept_an...

[pbhjpbhj]

But your pipeline stalls as you've people waiting to use the drier, those people block sinks, flow is reduced.

1 sink and 1 dryer: first person leaves after 30s, after 60s 3 people have been served.

2 sink and dryer combos: 2 people leaves after 30s, after 60s 4 people have been served.

I think the analog is that parallel processing is better than pipelining.