But seriously logic is the last thing you want to follow.
That seems to apply to all markets to include the stock market, not just altcoins

So many high value companies in the USA that never make any profits just running on loans for ever and ever (Amazon, Tesla etc)
I think though, a lot of the time, logic does EVENTUALLY come into play, you just have to wait long enough. Day trading certainly does not require logic though.
VALUE absolutely does come into long term, though still a lot of emotion does too. I mean why should DASH be in top 10 and not another equally capable anonymous coin?
No I'm talking about the kind of logic that people are trying to trade coins like LTC right now, they think if a equals b then c will happen when actually it's all about sentiment, and in this case I would say sentiment for LTC is pretty low generally.
I guess my point is people are overthinking trading when actually trading is 90% emotional intelligence and 10% mental intelligence. Successful traders like to boast but honestly I think picking winners is actually pretty easy and I'm as dumb as a brush.