^ And, if you note, that was in the 14th century following which there wasn't another "invention" for 3 centuries!...Good on them, I say...They were happy enough with only whiskey for quite some time...Heh...
Those three centuries were the period they were working on the concept of guerilla warfare.
Which they fkd up entirely, with Irish killing more Irish than the British army ever did, approximately 60% of the dead were killed by republicans, 30% by loyalists and 10% by British security forces between 1969 and 2001. (Wikipedia)