I think the core difficulty to further speech recognition is semantic understanding. One of the reasons computers aren't good at it yet is sheer lack of comput

I think the core difficulty to further speech recognition is semantic understanding. One of the reasons computers aren't good at it yet is sheer lack of computer power. Which forces them to use less context to decide word meanings. There is a reason humans think and remember things mostly in the form of stories, it provides more context for memory and decoding cues. The article talks about how much computer power has increased over the last decade without any increase in transcription accuracy ("freakish" is the word it uses) without mentioning the fact that it is still enormously behind human processing capabilities.