Elasticsearch: query accuracy

Question

Reading that the elasticsearch may not have a complete accuracy for term aggregation when setting the size (link), I start questioning this: are the normal queries (without aggregations) accurate when setting from and size?

Answer 1

Actually, the things are a little different see official explanation

Answer 2

from and size parameters are only related to the pagination of your results.

They have no impact on the results accuracy : it's just extracting a subset of the results computed for the request.