BSJ N° 8 – If you buy something frozen in AEON mall (a big chain of quite posh supermarkets) the lady on the check out gives you a coin. You take this coin to a machine you’ve seen every time you’ve been there before but never paid much attention to. You pull down a screen, attach the handles of your bag of frozen goodies to some handles. You close the screen, enter the coin and push a button. When you calm down from the excitement, you realise that the machine has filled your plastic bag with dry ice that will keep your peas, soy beans, spinach, water bottle (and Japanese homework, oops) cold all afternoon.