Some limitations of current scientific practice

I find it very hard to convince my students that in order to really determine how large an effect is you must measure it multiple times. They want to think all the measurements should give the same result. I find it equally hard to convince my colleagues that we need to publish more replications.     "Unrealistic scientific optimism," posted 4 June 2015 on gameswithwords.fieldofscience.com  is an excellent argument for why scientific journals need to publish more replications and more null results.