&gt;The CS interns were college kids, so it could just be a function of maturity.<p>I&#x27;d wager that almost every difference you&#x27;ve noticed is down to maturity.<p>The average 25 year old who&#x27;s been working for several years is a light years ahead of the average 20 year old college kid when it comes to attitude.<p>If you were hiring 25 year old CS grads, they&#x27;d likely have the same work ethic, and an understanding of the formal methods underpinning their experience.