They say the definition of insanity is doing the same thing over and over and expecting a different result.That’s what spending more on infrastructure and transportation to improve the economy would be: insanity.Infrastructure and transportation may have benefits, but turning the economy around isn’t one of them.For one thing, major highway projects are S-L-O-W. The Federal Highway Administration says major highway construction projects take 13 years to complete. Any project that won’t be finished until today’s first graders are in college is hardly going to jumpstart the economy.Second, it’s been tried and it failed. President Barack Obama’s stimulus had $105.9 billion in infrastructure spending.