lunatechian (lunatech-ian)

one relating to, belonging to, or resembling lunatech

Your spending power is less than what you think

Your income is not as much as you think it is.  Let me show you why  using the numbers from the US Census Bureau for Santa Clara county

Median household income (in 2013 dollars) is $91,702 .However, note that this is not the amount that comes into the bank.  The employer deducts the  federal tax from this. A rough estimate of the income tax would be 27% (standard deductions, no dependents). This leaves $66942.46 .

After the Federal government takes its cut, the state government levies the state tax on the income. For California this would be 8%. This leaves $61587.06 .

Now let us calculate how many hours someone needs to work to get $61587.06 into the bank. A workday is 8 hours. Mean travel time to work in(minutes), is 25 minutes. Let us assume that he/she gets 21 days of vacation. This means that including the commute hours, subtracting vacation hours and assuming 5 days a week, he/she work 2069.55 hours annually.

So, your hourly earning rate is 61587.06/2069.55 = $29.75. Read that again: the median hourly earning rate is $29.75 . If you do not account for the tax cut and the time you spend in commute, you will believe that your hourly earning rate is 46.65 . However, that is not what an employee earns.

Next, let us see how this converts to buying power. Suppose someone with median income wants to buy shoes with a sticker price $100. The sales tax in California is 8%. What this means is that he/she end up spending $108 on the shoes. To earn $108 , this person needs to work for 3.6 hours.

I have made a spreadsheet to make this calculation easier. . If you want to figure out your spending power, create a copy of the spreadsheet and fill in the cells with numbers that apply to you.

Some ballpark numbers (for California):

  • if your annual income is $50,000 , you need to work 6.7 hours to spend $100
  • if your annual income is $100,000, you need to work 3.3 hours to spend $100
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Faster setup of virtualenv with devpi

Setting up the virtualenv can take a significant amount of time because it pulls down packages from PyPI. I was surprised that it does not try to use the locally installed packages. One way to speed up the rebuild is to use a local caching mirror of PyPI. This can be accomplished by using devpi.

Step 1: Install devpi package

sudo pip install devpi

Step 2: Add the following lines in your /root/.pip/pip.conf file

[global]
index-url  = http://localhost:3141/root/pypi/+simple/
extra-index-url  = https://pypi.python.org/simple/

From now on, pip will first try to get the package from devpi-server running on your localhost first and if you do not have devpi-server running, will fallback to pypi.python.org .

Step 3: Start the devpi-server on your localhost: devpi-server. Try installing a few packages or build a virtualenv. The command devpi-server -start will start the server and put it in background.

TODO - figure out how to start this from init.

gaslighting

In 1938, a London stage play told the story of a husband who drove his wife insane. In order to convince the wife that her own brain had become an unreliable narrator, the husband dimmed the gaslights in their home and told the wife she imagined the change. The play gave rise to the term “gaslighting,” : "a form of psychological abuse in which false information is presented to the victim with the intent of making him/her doubt his/her own memory and perception". The name of the play was Gas Light

They’re our servants, tools

"You can see that our real problem is another thing entirely. The machines only do figuring for us in a few minutes that eventually we could do for our own selves. They’re our servants, tools. Not some sort of gods in a temple which we go and pray to. Not oracles who can see into the future for us. They don’t see into the future. They only make statistical predictions—not prophecies. There’s a big difference there, but Reinhart doesn’t understand it. Reinhart and his kind have made such things as the SRB machines into gods. But I have no gods. At least, not any I can see."

The Variable Man, by Philip K. Dick

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note to self - emergent behavior

An emergent behavior or emergent property can appear when a number of simple entities (agents) operate in an environment, forming more complex behaviors as a collective. How does it apply to distributed systems?

creating org-mode TODOs from wanderlust emails

If you are one of those five people in the world who use Emacs' wanderlust for email and org-mode, then you might find this tip useful. To create TODO items from emails, use the org-capture template. Below is the template that I use

(setq org-capture-templates '(("t" "Todo" entry
                              (file+headline "~/org/mygtd.org" "Tasks")
  " TODO %^{Brief Description} %^g\n%?\nAdded: %U" :prepend t)
                             ("j" "Journal" entry
  (file+headline "~/dump/journal.org" "")
  "\n %^{topic} %T \n%i%?\n" :prepend t)
                             ("e" "Email Todo" entry
                              (file+headline "~/org/mygtd.org" "Tasks")
                              "* TODO %^{Brief Description}\n%a\n%?Added: %U\n" :prepend t)
      ))

When you are reading an email and you want to create a TODO item from it, just do M-x org-capture and select the Email Todo (e).