It is small comfort, but there are so many of us in an ever-aging, ever-growing, segment of the population who are developing heart conditions, including after MRNA boosters (it seems increasingly so). We comprise a burgeoning proportion of the population globally that there is money pouring into research on this subject. We'll eventually get a solid grip on arrhythmias of different kinds. We're not in the dark ages, exactly, but we're only at the beginning of the 'renaissance'.