totally confused as to what "git bisect skip" is supposed to do

  all right, i'm sure i'm just being an idiot, but i always thought i
knew what "git bisect skip" did and, now that i'm trying to put
together a simple example, i'm utterly confused so here's a stripped
down example.

  with linus kernel source code, start bisecting [v4.13,v4.14]:

$ git bisect start v4.14 v4.13
Bisecting: 7300 revisions left to test after this (roughly 13 steps)
[15d8ffc96464f6571ecf22043c45fad659f11bdd] Merge tag 'mmc-v4.14' of
git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc
$

  now, based on how linux kernel release candidates work, i want to
skip a sizable chunk of those revisions:

$ git bisect skip v4.14-rc1..v4.14-rc2
Bisecting: 7300 revisions left to test after this (roughly 13 steps)
[15d8ffc96464f6571ecf22043c45fad659f11bdd] Merge tag 'mmc-v4.14' of
git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc
$

  i'm confused ... why, after skipping a good chunk in the interval
[v4.13,v4.14], do i still have exactly 7300 revisions to bisect? what
am i so hopelessly misunderstanding here?

rday