Yeah ... a second battery? You can clearly see that there is an EMPTY button battery receptacle on the small, obviously re-purposed, PCB with the activation switch.

Well, I think it's a good thing they weren't already there at the 6:21 mark, isn't it? Maybe, just maybe, working for NASA, they've been trained to deal with rocket technology and had some inkling that it would be a good idea to wait until the explosions were finished?

Might it not have simply been caused by the wind? Judging by the smoke flow, there was a pretty stiff breeze, and the lander crashed in the direction it was blowing. I assume the thing is designed for the airless environment in which it is intended to operate, not under these conditions. Maybe they just chose a bad day for the test.

Judging by the smoke flow, there was a pretty stiff breeze, and the lander crashed in the direction of the wind. Presumably the lander is not designed for these conditions, since there is no wind on the Moon or an asteroid. Could it be that they simply chose a bad day or location for the test?

In this case, the asterisk is part of the trademark.

I disagree. It makes a good point. Your comment, however....

They host two million forms created by 700,000 users, so plenty of people have heard of them.

More virtual mod points from me! This is the best advice.

I agree. I use both Dvorak and QWERTY keyboard layouts and have found that I have two different sets of "muscle memories" and tend to switch between them without conscious effort. It just takes practice.

Another good point.

Those MetaFilter people must be starting to rub off on me ....

Of course; valid point taken. Knee-jerk reaction on my part.

Yes, I suppose you're right; there are definitely use cases in that range. And most hard drives are a lot bigger than that these days anyway.

The authors estimate that it would be feasible to hide about 20 MB of data on a typical 160 GB HDD.

Wow, isn't that useful.

...and you just proved that it is, in fact, "arguable".