[Avodah] When do princes say shema

[Zev Sero]

>> While we're at it, can someone explain how we still have taam
>> matzah, and must not drink so as not to wash it away, after
>> we've drunk two more kosos.

While I'm on the topic of things that have puzzled me for a long
time, can someone please explain when princes are supposed to say
shema?

And what makes Beis Hillel say "uveshochbecho uvekumecho" means the
time when "people"  sleep and get up, rather than the time when *you*
do so?  I understand that they reject Beis Shammai's hyper-literal
interpretation that it refers to your posture, and they say it means
a time instead, but where do they get "bnei odom" from?  Bepashtus the
possuk means simply that you should say shema just before you go to
bed (as we do) and just after you get out of bed.  E.g. within half an
hour or an hour or 18 minutes or 72 or whatever shiur the chachomim
determine, but related to your own going to sleep and waking up, not
to other people's.  So what made Beis Hillel give a less obvious
interpretation involving "people"?

-- 
Zev Sero        "Natural resources are not finite in any meaningful
zev at sero.name    economic sense, mind-boggling though this assertion
                  may be. The stocks of them are not fixed but rather
		 are expanding through human ingenuity."
		                            - Julian Simon