EBS is 'traditional' because it is high performance and low-latency, suitable for databases for example. If you're just storing a bunch of files then S3 will be good and scalable. Indexing might be slower because of the slight latency increase, but if your indexer can parallelise its indexing then it shouldn't matter much.
You would probably want to use an EBS volume to store the indexes themselves, or keep the indexes in RAM, otherwise the latency will hurt your application a fair bit... But it depends on your use case. Do some experiments.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.