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February 20, 2010

Robert写了一篇很好的“Ideas 的演变 — How to kill too many ideas ”,里面提到ideas是如何从少到多,然后又从多到少,以及如何用scrum来管理ideas。我也经历过这个少-多-少的过程,所以看了以后很有共鸣。另外我也想说一下scrum的利弊。

先说ideas的成长过程。我看来,想法数量的变化,是随着对业界的了解逐步加深而变化的。在涉足互联网之前,我因为对计算能力的追求,一度沉迷于计算机体系结构。开始对提高计算能力,只局限于使用嵌入式汇编;等对计算机的体系结构有了了解,就深入到存储体系,以及针对流水线进行优化;后来接触到超长指令计算机,以及可配置计算,终于触及了数据流计算机;这个时候回头看看,忽然发现,原来很多的性能提升,其实并没有摩尔定律这么坚定有效,可以预测。于是很多对计算能力提升的想法,就变得不那么实际了,这个时候,ideas就少了。

对web也是一样。我对web的着迷,同样是出自对数据和算法的迷恋,开始接触web的时候,想法还不多,等对行业有了了解,想法就喷涌而出,但是像Robert说的,等到用自己的资源这把尺子去衡量的时候,实际的想法其实只有那么几个。这个时候,也才真正理解了业界前辈的叮嘱:idea is cheap。也就是到了这个时候,才认真的翻检所剩无几的几个想法,挑一个自己最有热情的,埋头做下去。这个时候,别人问起我有什么idea,我一般也说不出什么,倒不是不想分享,主要原因,是这个时候已经不是虚无缥缈的想法了,而是一个可以执行的行动计划,只需要机械的去执行,中间按计划修正目标就是了。

再说Scrum。Robert提到,把ideas按照和目标的轻重缓急,以及资源是否充足来排序,把不重要的ideas放到backlog里面。这个就是scrum的方法。这个我完全同意。我这里想说一下scrum以及敏捷开发的一些体会。

Scrum和敏捷开发的好处是灵活,但是也要注意,任何形式都是有优缺点的。Scrum的一个问题,就是很容易不停的因为目标变化而重新设计,最终导致不能交付。所以在Scrum的培训里面,会着重提出:要把系统进行“垂直”分割,做成有相对独立功能的,可以使用的模块,尽早完成某些分割,提交用户使用。这个原则放在典型的三段论web应用里面,就是要交付一个包括数据源,商业逻辑和web界面的完整子系统,这个子系统因为资源不足,功能不全,但是交付的功能可以供用户使用。这样的好处很多:可以快速开发,迅速获得用户,更重要的 - 获得用户反馈,维系团队斗志,探索新的方向等等。

当然这种垂直划分,也不是绝对的。因为应用不同,各个模块的份额和相互关系不同,机械的垂直划分,容易陷入困境。事实上,用户未必是公司或者团队以外的人,如果把团队内部的不同分工也当成客户,那么对应用的划分,就可以不那么机械了。

3 Comments »


  1. Deprecated: preg_replace(): The /e modifier is deprecated, use preg_replace_callback instead in /home/samsongli/meirendaddy.com/blog/wp-includes/kses.php on line 947

    Deprecated: preg_replace(): The /e modifier is deprecated, use preg_replace_callback instead in /home/samsongli/meirendaddy.com/blog/wp-includes/kses.php on line 948

    http://www.evca.net/pages/vc_based_companies.asp

    这个单子里的VC拜访过几个?

    当然有的是不能拜访的,比如保罗那个。

    Comment by 素里太守 — February 22, 2010 @ 2:31 am

  2. @太守,什么时候给我留个email,聊一下吧。

    Comment by 美人她爹 — February 26, 2010 @ 11:47 pm

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