I think they're referring to arbitrage occuring within a single bookies odds

or if their odds were wildly different to other - both of which would be "palpable" errors. If arbitrage can be found it would be a small difference in odds between two (or perhaps more) bookies. That's why it's so time consuming and the returns are relatively low. Just found a forum where one guy claims to be making $3000 a month, but working at it sometimes 10-12 hours a day. Frankly he might as well be doing a proper job ...

Posted By: BerlinCanary, Mar 16, 01:53:00