The revenue of BOT is proportional to the input amount. In the case of less, the profit margin of 1 yen or less is repeated several thousand times, profit of several thousand yen. It is difficult to do this manually. In other words, people with manual transactions will not trade unless they have a margin of 5 yen or more at a small amount. BOT is thousands of transactions in that gap. In large BOT funds, huge lid, pricing control, buy-up fishing up, selling out and bathe over hundreds of thousands of yen in a short time.