Over the last century or two we've had a burst of technological revolution. I say this could continue over the next 50 years or so before things slow down again.Yes, they've been getting better. At a far slower rate than technology is currently.
Here's an example: Ships have been around for centurys, and until the mid 18th century I belive, they were made of wood, and powered by wind. Only over the past 200 years or so have we been making ships out of metal and using propellers to move them. And now it's just a matter of making the most efficient engine, until something else revolutionary comes around