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What is better: vented or un-vented attics?

Fun introduction to the system model for ventilation and engineering design of attics.

Seriously.

Here you go.

How to get “Local Pickup Only” items delivered to you

Great listings on online auction sites are often “Local Pickup Only”. It would help to have a friend who lives there who can ship it to you. If you don’t, then, fortunately, you can hire one.

I haven’t tried it yet, but sites like TaskRabbit seem to be the way to get stuff picked up and delivered to you.

I wish I knew about this when that perfect Macintosh SE/30 got listed in Los Angeles!

Wisdom And Wonder’s RSS URL Is Changing: Please Update Now!

Here is the new RSS feed.

Please update before it is too late!

Forty-two of you won’t see any more posts unless you do.

Can you ever set your standards too low?

The greater danger for most of us lies not in setting our aim too high and falling short; but in setting our aim too low, and achieving our mark.

—Michelangelo

What dash should I use when attributing a quotation?

Use an EM-DASH, which is this: —
- Not an EN-DASH, which is this: –
- Nor a HYPHEN-MINUS, which is this: -
Do not leave a space between the EM-DASH and the name.

For example:

Wisdom begins in wonder.

—Socrates

AppleCrate II: A New Apple II-Based Parallel Computer

Here is a High Performance Computing (HPC) system with sevente Apple II motherboards: one controller and sixteen nodes.

It is probably as great as you imagine.

A Hand-Held Mobile Computer Running Python

Here is a hand-held mobile computer running Python.

It does GRAPHING pretty well too!

So You Want To Build Your Own Cray-1A?

How hard can it be?

Here is how.

Org2Blog v1.1.11 Released

I just tagged Org2Blog v1.1.11. It’s got a few nice changes for easier blogging. It got a lot of changes to make it easier to contribute and report issues. After this, all of the work will bring it up to the current version of Emacs and Org mode. That work will begin in the v1.2.0 branch. For the sake of simplicity, consider it unstable (no matter how unlikely, that is where issues could show up). When it is ready, I’ll post it for people who want to test it out.

Happy Blogging!

Here is the change summary:

Continue reading “Org2Blog v1.1.11 Released”

Invert Colors and Toggle Grayscale with JavaScript on macOS

Via reboot81:

Open Script Editor and paste each block into a new script for you to use.

Invert Colors

var systemEvents = Application("System Events");
var systemPreferences = Application("System Preferences");

systemPreferences.activate();

systemPreferences.panes.byId(
    "com.apple.preference.universalaccess"
  ).anchors.byName("Seeing_Display").reveal();


chkInvert = systemEvents.applicationProcesses.byName(
    "System Preferences"
  ).windows.byName("Accessibility").checkboxes.
      byName("Invert colors");

systemEvents.click(chkInvert);

systemPreferences.quit();

Toggle Grayscale

var systemEvents = Application("System Events");
var systemPreferences = Application("System Preferences");

systemPreferences.activate();

systemPreferences.panes.byId(
    "com.apple.preference.universalaccess"
  ).anchors.byName("Seeing_Display").reveal();


chkInvert = systemEvents.applicationProcesses.byName(
    "System Preferences"
  ).windows.byName("Accessibility").checkboxes.
      byName("Use grayscale");

systemEvents.click(chkInvert);

systemPreferences.quit();