multiple identical nfs mounts allowed

[Acrimon Beet]

I understand this has been discussed before in a limited way 
(http://www.uwsg.iu.edu/hypermail/linux/kernel/0108.1/0070.html is all I 
could find), but what is the justification for allowing multiple identical 
nfs mounts?

eg

# mount server:/export /mnt
# mount server:/export /mnt

will give this:

# mount | grep server
server:/export on /mnt type nfs (rw,addr=192.168.1.210)
server:/export on /mnt type nfs (rw,addr=192.168.1.210)

This is not possible with block devices.

Is this at all a dangerous state of affairs?

thanks
ABeet.