Installing base system and internet connection

[ptrk mj <ptrk.mj@gmail.com>]

I've found a contradiction. It is claimed that netinst iso contains
the so-called base system. Albeit install manual states that network
(internet?) connection is necessary during installation of base
system. How come?

http://www.debian.org/releases/stable/amd64/ch06s03.html.en#di-install-base
"Although this stage is the least problematic, it consumes a
significant fraction of the install because it downloads, verifies and
unpacks the whole base system. If you have a slow computer or network
connection, this could take some time."

Please CC messages to me.
--
ptrk mj