Instruct: Classify Amazon reviews into positive or negative sentiment
Query: More 'Aero' Than 'Practical Techniques'

I bought this and Martin Simons' 'Model Aircraft Aerodynamics' at the same time, thinking that I'd have all the bases covered: Simons for aero, Lennon for construction techniques. Silly me. Why would I think a book entitled 'Practical Techniques for Building Better Models' would have anything to do with construction?The reality is that both books cover the same topic: aerodynamic design. In my opinion, the Simons book does a better job.