Posts by ReflectOnLight

Google's video recognition AI is trivially trollable

I think it worked correctly.

If there was a picture of something different every x number of frames then I would argue that there were two videos here. One of the lion and one of the car both being played back to the AI. That it classified the lower frequency one correctly seems to indicate it worked somewhat correctly given that it should give one answer. A human may not see the car because of the persistence of vision aspect of the human eye and its low bandwidth but the AI would see it. And with the picture of the car being identical in all cases, see it better than it saw something that continually moved around and changed shape like the lion. Effectively, the lion was variable noise, the car a constant if infrequent feature.

Brits need chutzpah to copy Israeli cyberspies' tech creche – ex-spooks

Trace the angle money of those start-ups back and you end up in the intelligence service. Your US and British tax money (given to Israel) at work to spy on you. Facebook, and all the rest treat you as the product.

Microsoft blinks, extends Windows 8.1 Update deadline for consumers

Re: It's not the user's fault if you hide the updates.

At which point it fails and takes all of 20 minutes to put back to Win8. I have tried to update at least 20 times from the app store and a DVD. Always the same, 4 to 5 hours wasted. One would think that if their upgrade doesn't work on a great many machines they would abandon the "upgrade or else" stupidity. But this is what Microsoft has devolved into. If they want me to upgrade they are going to have to send someone to my house that can get the upgrade to work.

LOHAN lifts skirt on 3D printed parts

propelent volume goes up as the cube of smallest dimension, more or less

Fill your balloon with hydrogen instead of helium. You get 4 times the lift and it’s a bit cheaper. Suspend your payload from one corner so the rocket points up and slightly to the side to miss the payload parachute. Then launch the rocket through the gas when the balloon pops to ignite the hydrogen. Pretty!!!

A lifting body style rocket might give you more volume for your propellant, r^3 and all that. And you don’t have the problem with wings sticking out creating drag vortexes.

My rocket shrinks in the cold

Given the shrinkage with temperature they are showing in the video, I suggest you study the mounts for internal parts like electronics and rocket motor closely. Coming late to the party I suggest a steam rocket. It won’t give much distance compared to the solid propellant but should make a very nice vapor trail to let you see when the rocket launches from the ground. Put some really good insulation around the payload box and a battery to keep the temperature up. A spring mechanism should be easy to rig to launch when the balloon pops if the payload is suspended by it.