No, you can increase also the _throughput_ (= the number of sectors handled in a given -large- period of time) by adding pauses shorter than the seek time. To be more specific - let's have two readers: A and B, each reading from its own part of the disk [A], and [B], respectively. For the sake of simplicity let's assume that two subsequent operations within the area [A] or within the area [B] do not require seek and are fast, while the read from the area [A] followed by the read from the area [B] requires seek, which is much slower. Then it is definitely better from the throughput point of view to issue the operations in the following order:
It is not a bursty workload or a response-time-critical workload. It is an "unlimited supply of work" batch workload by my definition. And it has higher throughput with the pauses added than without them.