Quote - While strides have been made, any application that purports to 'understand what you say' always teases a giggle out of me... 8)

That sort of statement in a blurb always reminds me of the promise "our program understands English™!!!" — "English" was the company's trademarked BASIC-descended query language.  :laugh:

Quote - Some problems are hard... some are NP hard.

It's just left as an exercise for the student... if your student happens to build AI-capable androids with funny skin colours as a hobby...  :biggrin: