Australian rules football and Gaelic football are codes of football, from Australia and Ireland respectively, which have similar styles and features of play. Notably both are dominated by kicking from the hand and hand passing as well as rules requiring the ball is bounced by a player running in possession, both have a differentiated scoring system, with higher and lower points values for different scoring shots, both have no offside rule, and both allow more physical contact and players on the field than other football codes - 15 in gaelic football, 18 in Australian Rules. Although there are also many differences, the similarities have allowed a hybrid game to be played, with a regular International rules football series between top Australian AFL players and Irish GAA players. It was a popular assumption from the 1930s to the late 1980s that Irish football is the basis for Australian football, based primarily on the premise that Ireland is older than Australia and the two games look similar. The correlation between Gaelic football and Australian rules football also lec to a belief that caid played some part in the origins of Australian rules football. Some historians have cited questionable cause as a reason for the assumption, while others suggest reverse causation as a possible scenario. Nevertheless the relationship of Irish football to Australian football and a hypothetical role in the Origins of Australian rules football remains the subject of debate. While there are some mentions of Irish playing football in Australia (English and Scottish foot-ball were far more common) before the formation of the Melbourne Football Club, there is no specific mention of either "Caid", "Irish football" or "Gaelic football" in Australian newspapers of the time. The earliest mention from an Irish sources in Australia in 1889 was that the old mob football had very little in common with modern Gaelic football which upon first appearance in 1884 was received as more a hybrid of English and Scotch football. Patrick O'Farrell, and Chris McConville along with Marcus De Búrca, have used similar logic to postulate that hurling (which was documented in Australia) was the influence, however modern hurling was not codified until 1879. Some historians claim that the similarities are largely coincidental, that there is only circumstantial evidence for a relationship between the two codes, and any resemblances are the result of something akin to parallel or convergent evolution. Most contemporary historians emphasise