"Black Box"
Only the last two hours of call history can be remembered.
The signal can only be transmitted in about 30 days
Provide investigators with evidence to help them understand the truth behind the accident
Survives many harsh conditions unscathed. Even with such protection, the black box was still damaged in some air crashes.
Pilot
shelf life of love
length of life
The final answer to the riddle - I love you. I hate you.
At the end, can we still find the answer to the riddle and find our original self, the purest self?