Giving the "90% answer" in an interview just shows familiarity with technology platforms/software. Need a web app? Rails. Want a database? MySQL. Need queuing

Giving the "90% answer" in an interview just shows familiarity with technology platforms/software. Need a web app? Rails. Want a database? MySQL. Need queuing software? AMQP. Version control? Git. And giving these answers in an interview is...alright - you don't want to hire people that aren't familiar with what's happening in technology, but you do want to show that you're somewhat of a critical thinker. Most good developers I know ask tons of questions and say very little. If you can model that thought process during an interview - web app, eh? Does it need to talk to a DB? Are the requests short or long-polling? How are you hosting it? How much view work is there? Will there be an API layer? - that shows you know how to research problems and solve them correctly. This isn't to say I wouldn't hire someone who answered my web app question with a simple, "Rails," but it immediately starts to raise red flags for me.