It makes sense to start with the year zero when you want to do any calculations that involve dates that where before and after year one. If an empire was founded in 50 BC and dissolved in 50 CE to calculate its age when it was dissolved you have to acknowledge that there is no year zero so instead of just calculating 50 - (-50) = 100 you have to substract one which is counter intuitive. Because it went from year 1 BC straight to 1 CE.

Mit dem eigenen Handy Scannen gibt es auch schon bei Ikea.

You can look for ESD heel & shoe straps. They are relatively cheap and help you discharge while walking around or buy shoes that are ESD rated in the first place.

I think there are even dongles that let you charge while listening to music.

Das sind aber 200g Pilze pro Woche. Wenn man so viel das ganze Jahr über und auch nur von den Radioaktivsten Pilzen aus dem Wald holt würde ich sagen, dass Pilze sammeln schon ein wichtiges hobby für einen ist und das gestiegene Risiko verkraftbar ist.