A couple of pointers (based on an engineering approach to the problem):
1. Don't microwave any bagel other than a frozen one (reference my "recipes" post earlier). If it's just a bit stale, toast lightly. Very stale, put it out for the birds! Extremely stale, throw at any squirrel attacking the bird feeder.
2. If bagel is frozen AND a bit stale or freezer-burned, nuke in a bag (paper, rolled up opening) for a time best determined experimentally, taking into account size/weight of the bagel in question and the power of your microwave. My optimum turned out to be 31-32 seconds for a largish bagel HALF. solidly frozen, and this produces excellent results for me 98% of the time. The few failures will have one or two small "extra-chewy" lumps that can be a challenge to consume.
The above also assumes bagels were frozen immediately after being sliced while still warm from the oven! BTW, Max, my wife wanted me to take and post a "selfie" with my classic bagel/cream cheese/onion/lox/tomato Sunday breakfast, but I was too hungry to wait to eat!
On the one occasion I tried microwaving a bagel, it appeared to have been vulcanised. It became unbelievably chewy, nearly resistant to any shearing forces exerted by human teeth. How do you avoid this?
What are the engineering and design challenges in creating successful IoT devices? These devices are usually small, resource-constrained electronics designed to sense, collect, send, and/or interpret data. Some of the devices need to be smart enough to act upon data in real time, 24/7. Specifically the guests will discuss sensors, security, and lessons from IoT deployments.