The ICC have made their annual adjustments to playing conditions and in addition to their usual futile tinkering with ODIs, there is actually some stuff of note.
The biggest is probably that the ICC have given approval for Day/Night Tests provided both sides agree to the hours and type and colour of the ball. I’m not happy with this and I’m less happy that Australia have already said they would be keen to play D/N Tests. I do understand the need to reach out to audiences with Test cricket and I can just about understand it in places with sharply declining Test attendances. But I very much hope they are never implemented in England and I would rather they weren’t in Australia either. In places where Test cricket is still strong they should stick to the traditional red ball and sunlight.
The worse change is to the DRS, however. After India blocked it’s universal application, the ICC still made a tweak to the umpire’s call margin. They have widened the umpire’s call margin for the ball hitting the pad to half a stump width, the same as the margin for the HawkEye projection. But this betrays an utter ignorance of how a margin of uncertainty actually works. The margin of uncertainty regarding where the ball hits the pad is related to the accuracy of the cameras and nothing more. There certainly is one, but it will depend on the specific technology and is almost certainly smaller than half a stump width. And it is definitely smaller than the margin of uncertainty for where the ball hits (or misses) the stumps because by nature the uncertainty increases the farther into the future one tries to predict! What ought to happen in both cases is that the on-screen graphic should just show the uncertainty as it shows the path of the ball and that should be used to determine umpire’s call. Nothing else makes sense. Using the same, completely made-up margin for both is utterly ridiculous and all it will do is increase the controversy about the results. Given the influence the BCCI had, however, that may be the point.