Re: SIP is not Takt Time

On 2003.02.07, Dan Palanza <[email protected]> wrote:
> At 11:30 PM 2/6/03, Dossy wrote:
> 
> >Cycle time is measured, takt time is calculated.  Takt time is not a
> >"physically real" passage of time.
> 
> It is not rocket science to comprehend that cycle time is derived from 
> calculating a set of takt times that make up an actual cycle. What is being 
> measured is a sequence of physically real operations in an experiential 
> application. In bookkeeping we measure the parts and express the sum of the 
> parts as meaningful information in that context of measurement.

Cycle time is measured.  Takt time is the desired cycle time -- it's an
arbitrary number, which is meant to represent the desired cycle time
based on working backwards from a desired end result.

Cycle time isn't derived from takt time.

Maybe, let me (to use your nonsense) "put this in pattern form" for you
-- maybe you'll understand:

    Suppose you have a dinner party and you need to feed five guests.
    It's currently 4:00 PM and they're showing up at 6:00 PM.  That
    means you have two hours in which to have dinner ready.  That's 120
    minutes.  To cook a single entree, which cannot be cooked
    simultaneously with any other entree because your kitchen is too
    small, takes 30 minutes (THIS IS THE CYCLE TIME).    However, 30*5
    = 150 minutes -- more than the 120 minutes.  In order to cook all 5
    entrees in 120 minutes, they each need to cook in 24 minutes (THIS
    IS THE TAKT TIME).

Takt time is not any way derived from cycle time.  Cycle time is not
derived from takt time.  They are two seperate, and independent figures
and are simply used for comparison purposes.

> I'm saddened that this does not please you, for it prevents you from 
> knowing things that are extremely important in the culture for which you 
> write software.

I don't see how false beliefs and incorrect understandings are extremely
important in writing software.

-- Dossy

-- 
Dossy Shiobara                       mail: [email protected] 
Panoptic Computer Network             web: http://www.panoptic.com/ 
  "He realized the fastest way to change is to laugh at your own
    folly -- then you can let go and quickly move on." (p. 70)

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