Diversification has genuine merit in automated trading, though it introduces its own complexities. Running several EAs across different strategy types, mean reversion, trend following, and perhaps a breakout system, can reduce dependence on any single approach performing well in all conditions. That said, more EAs also means more parameters to monitor, more potential for overlapping exposure, and a greater risk of over-complicating what could be a manageable setup. Starting with one system, understanding it thoroughly, and expanding from there tends to be a more grounded approach than loading multiple EAs simultaneously from the outset.