Am 12.03.2013 19:03, schrieb Chris Murphy:

i learned it many years ago by facing the boot-menu

Well you wouldn't learn it today because of how grub2-mkconfig and grubby interact.

ah and because things got worser you would make it more worse

Your first kernel update depends on grubby to write the entry in grub.cfg, 
and uses a nomenclature completely different than grub2-mkconfig. 

thanks god for that, so i have the same behavior as
all the years before on any machine

And then, most new linux users with Windows or OS X experience, 
have no idea what a kernel even is.

so they can learn or use Windows/OSX

If they do, most don't know what the kernel does that system services don't

so they can learn or use Windows/OSX

Next it is never the case that Windows or OS X or mobile devices have 
multiple kernel versions. There is only one kernel at one time on such systems

BUT WE HAVE AND IT IS A BLESS

You'd have to learn this

and you learn by FACING things

Even if I were to see a coherent list of kernels in a list by their date, 
it's unlikely I as a new user would have made the leap to try another option

with this argumentation you can follow the current attitude
to make linux-systems to the same blackboxes as other
operating systems

but the better option for us all would be if people with
this attitude switch to these operating systems instead
damage slowly what we know as UNIX-LIKE system