Altcoins prices push the price of bitcoin up and down !!
if Altcoin is a simulation of bitcoin's path, so why not just bitcoin enough ??
Any altcoin owns its name, project and ideas, so why that altcoins are related in the pricing with bitcoin ??
I think it's all because of the available crypto trading platforms, Altcoins will surely able to influence the price of BTC everytime its hodlers will trade their tokens to bitcoin and convert their BTC in to cash.