Have to say I disagree with Brian, if you ask 15 turners any question and get less that 17 answers that would be amazing and also not wrong! As there are many ways of achieving the end result, each of which is affected by many factors. Type of timber, your storage facilities, air temp and humidity, age of timber when acquired and sometimes blind luck. All these things come into play. I use a fan powered kiln and I actually add trays of water to the kiln especially in the summer as it works quicker with high humidity than just dry air.
The straw analogy is 100% correct though in at least 93% of circumstances, that is why you seal the endgrain but not the side grain because you do want it to dry... and also good to keep in mind when cutting, you will hear "cut down hill" "cut with the grain" and various other terms, if you visualise that bundle of straws you always want to cut against supporting fibres (straws) so visualise that bunch in different orientations and look for where the supported cut direction would be. Obviously when cutting a burr or even a crotch there will be issues with the cut down hill ideal, but at least you will know where to expect problems.