[PnP] pnp Digest, Vol 142, Issue 5

[David Sanders]

Hmmmmm....believe it or not, there are three ways of rounding in mathematics...and they all have their own symbols.  Something I just learned about.

Round...this usually means that you round 21.5 to 22....the way most of us probably learned in school.  HOWEVER....depending on the situation, such as wanting a conservative bias in your statistical results, you might round to 21.  Yes...arbitrary, but what isn't these days?

Round Up is a specific mathematical operation where the number is rounded up to the nearest significant figure you have designated.  In our PnP situation, this means the next integer.  So....10.00000000003 rounds up to 11.  That's how all the "RU" situations are handled.  For example, calculating HPV...the original printed rules included a table showing that 21.25 rounded up to 22.

Round Down is just the opposite...where the 10.99999999999997 rounds down to 10.

Keep in mind, this is how excel also works...and why there are three different formulae commands for rounding.  For all I know there are even more.  I ain't no mathematician.

Dave

Sent from my iPad

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>   1. Re: pnp Digest, Vol 142, Issue 3 (Scott Adams)
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> Message: 1
> Date: Sun, 15 Oct 2017 20:32:40 -0400
> From: Scott Adams <longshotgm at comcast.net>
> To: The Powers and Perils Mailing List <pnp at list.powersandperils.org>
> Subject: Re: [PnP] pnp Digest, Vol 142, Issue 3
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> 
>> The rounding two different ways is for a reason.  In the round up
>> method, Richard's Way, it's usually to provide the player with some
>> benefit in the beginning.  With spells, often it's so that there is
>> no 'dead zone' with the spell such that for one or two EL's it virtually
>> doesn't do anything.  Why would a Mage even bother casting a spell that
>> does nothing?
> 
>> The round downs are intended to be restrictive.  They are usually
>> there to encourage a player to strive higher in order to gain an
>> important improvement.
> 
> See I like your POV.  IT does help the newbies.  I just remember
> months in this list with Richard talking about it.  I guess he
> didn't explain it well enough or I was too brain dead. :)
> 
> But yeah I always use my 'new' math or is it the old new math
> or the old old math?  From '80s.  :)
> 
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> End of pnp Digest, Vol 142, Issue 5
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