I ran this test using two sets of fairly wideband headphones and got results that were consistent across headphones but different between an HP laptop and a MacBook. The headphones were rated, respectively: (1) 15 – 20,000 Hz, 47 Ω input impedance; and (2) 15 – 24,000 Hz, 35 Ω input impedance. On the HP laptop with “IDT High Definition Audio” (92HD93 chip), I could hear a range from 30 Hz to 18 kHz. On the MacBook Pro with mid-2014 hardware, I could hear a range from 20 Hz to 16 kHz. I was quite surprised at the magnitude of this difference. A headphone amplifier (e.g. one built into the headphones) driven by digital input would eliminate this difference.

But as far as full-system backup and restore options go, you either have to root your system and use Nandroid or Titanium to backup to the phone storage itself, or you have to rely on adb backup. adb is Android Device Bridge, something that is accessed through the Developer Mode on Android. It feels like Google has given up on this feature midway through and just left it flopping around, because it simply does not work. Although I haven’t had trouble getting backup to work (‘adb backup -apk -shared -all -f [file]‘), I could not get restore (‘adb restore [file]‘) to work automatically because of this bug (which incidentally is also obsoleted).

It turns out you need to get into Settings->Apps and kill as many running processes as you can, and then while restore is going on, monitor through adb shell and logcat | grep Backup, and continuously pm disable a number of running processes including com.google.android.googlequicksearchbox, com.google.android.plus, com.google.android.music, or whatever else restore is stuck on. If you’re lucky, the restore process finally “finishes” and half of your apps and data are restored, while the rest are either not installed, or installed as some old OS-default version, including Google’s own apps like Talk, Maps, etc. on account of Google Play services not being restored. Yeah, thanks, Google!

defaults write com.apple.mail DisableInlineAttachmentViewing -bool yes

Just look at that and think about what it does! None of those do anything at all.

But I found this today after much searching: OS X Mail – disable inline attachments, and it is indeed the only solution that works.

Edit: However, I can no longer recommend this Mail plug-in. Not only does it nag-screen for payment an hour or so after first using it, there is not even a way to uninstall it without manually going through the system. Given how difficult it is to cleanly remove .pkg installations on OS X, I consider this thing to be in terrible taste. Use at your own risk.

WHAT?? You can’t take the battery out? What? I do that all the time… Like most users, I switch the battery in and out all the freaking time.

And the comments on Youtube are clearly Mac users parodying themselves, since no one seems to get the joke.