标识断言可能简单地采用用户名令牌，也可能涉及到请求应用程序代表用户获取令牌，并在后续操作中由esb对此类令牌进行验证。

Identity assertion may be as simple as a username token but may involve the acquisition of tokens by the requesting application on behalf of a user and subsequent validation of such tokens by the ESB.

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如果增加更多的断言，可以清楚地看到，替代的数量将指数级的增长。

If more assertions are added, it is clear to see that the potential number of alternatives will grow by a binary escalation.

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没有证据的断言可以没有证据地屏弃。-克里斯托。弗希钦斯(上图)？

What can be asserted without proof can be dismissed without proof. - Christopher Hitchens (pictured)?

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