Anyone else find the f.select(g)/f.join(g) syntax unintuitive/awkward? I'm confused as to why they wouldn't go with the (IMO) more logical select(f, g) and join

Anyone else find the f.select(g)/f.join(g) syntax unintuitive/awkward? I'm confused as to why they wouldn't go with the (IMO) more logical select(f, g) and join(f, g) in this case (since neither Future is really the "subject" in these cases). Not that this is a major concern (it would take only a few lines of code to change within your own program using an alias for the functions), just interested in knowing the rationale behind the choice.