Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Comfort cannot be automated

Having previous thermostats with excessive programming and "control-freak" options - the fact is basic/old technology is what saves money in the end. The fact is, no device can predict human preference in temp or comfort levels - regardless of bells, whistles, automated thermostat additions or device options - and since us installing this device in our work studios and homes, it has saved heating costs by nearly 40% or more in all locations. The simple philosophy of turning it on when you're cold and turning it off when you're warm is simple. And its proven to only be used when residents are truly cold. 40% in all locations is enough for me to believe and I will continue using this device at current and future locations. Automation is expensive - regardless of what it says it may save. My previous Honeywell digital touchscreen thermostats are a step backwards from these simple and quick/accurate products.