Why is it important to double click the bottom of the heat sink before attaching it to the CPU sockets?

It's important to double check the bottom of the heat sink before attaching it to the CPU socket to ensure proper installation. The process is simple and it's done by installing the CPU into CPU socket on the motherboard first which will ensure the pins are installed correctly as well for easier CPU install. Then, you smooth, thin, and even thermal paste on the heat sink and CPU, and finally you install heat sink.