The core difference with AI is that it is adaptable. Sure, flailing around and happening to do something useful isn't clever, but if we can reinforce useful behaviours something more closely resembling intelligence can emerge.
The helium reduces resistance which results in lower vibration of the read/write heads, which in turn allows for reduced space between the platters and the heads, which allows for a reduced space between the platters and more platters per drive.
If the same drive was filled with air rather than helium, the increased vibration of the heads would cause them to crash into the platters - which would scrub the disk clean (which would be bad).
Deep learning has really only recently become successful with new learning algorithms such as constrastive divergence and convolutional neural networks. Previous efforts were focused around backpropagation, but due to the signal loss across many layers there was never enough information in the output layer to successfully train the network.
Deep learning has really only recently become successful
hinton coined the term "deep learning" around 2006/2007 (more around deep belief nets/RBMs, but still, same thing), if that's considered "recently."
constrastive divergence and convolutional neural networks.
CD was also ~10 years ago. CNNs were reading your checks and postal zipcodes in the mid 90s.
successfully train the network.
In the early 90s, RNNs were driving cars on highways using only webcams under basically VFR. No giant sensors, no LIDAR, no GPS, no mesh networks, just camera input.
The 2012 ImageNet results were what really launched the current interest.
Before that there was little evidence that any form of neural network was massively better than other forms of machine learning. Now it has become clear that isn't the case.
A lot of new malware is self-modifying. In situations where this is the case checksums lose most if not all of their value. Heuristics in such situations are really the only viable option.
There really needs to be a change to patent law around independent derivation of a concept. At very least we need to look into generalised thicket busting laws. The current situation is fundamentally unscalable.
Concatenation of the hashes seems like an unjustified risk, that in certain circumstances will allow weaknesses from either algorithm to flow throw to the final hash. If you really want to combine the hashes, XOR seems like a safer bet to me (since the algorithms are unrelated there should be no potential cancellation of entropy).
Seems like XOR is better for approximating a random oracle, and appending is (negligibly) better for ensuring collision resistance. People often are not clear about which of these two very different properties they actually want out of a hash.