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Is it possible to manually pause, turn off the heat on the hotend (and bed?), then manually resume a print?

I ask because I've read of people having the Thermistor go out on them and the hotend go into a runaway heatup. I'm also reading that print times can get pretty nuts, with 8+ hours not uncommon. I don't have the printer yet, but for now I'd need to run it inside the house. With longer print times, I would have a hard time being able to stay home and awake to see a longer print through to the end. For longer print to run uninterrupted, I would have to leave it unattended for parts of the run, or overnight. I'd hate to think what would happen in the case of a thermistor failure if I wasn't around, or asleep in another room. And it seems those failures or near failures of this type are not unheard of. What is the actual fire hazzard if a thermistor fails in the middle of a long run and the print tried to keep going?

How do you guys deal with long print times?

Thoughts?

Thanks

-David

we can set limits so temps don't get exceeded, if a thermistor goes bad i think the firmware will actually force the printer to enter dry run mode by default.

The way run away heat ups tend to happen is if the thermistor comes lose from the Hotend.
At that point the thermistor is reading a reasonable value, but it isn't the temperature of the Hotend. As a result the firmware turns the heat onto max, and the actual temperature of Hotend skyrockets.
It's how I lost my first ever Hotend.
But in practice it's a none issue, if you mount the thermistor carefully.

So I assume a threaded thermistor would prevent the possibility of it coming loose? Do you guys who print at home leave it to print unattended for extra long prints?

I wonder what it would take for the firmware have a safety where if it senses full uninterrupted power to the heater for more than a preset amount of time it would shut down. That is assuming that the heater should never be In a full power state for that amount of time under normal circumstances. Just thinking aloud...

Thanks

-David