To further add in constructing add-ins, Erik Mikkelson has created a test harness that shows the outputs, errors, and events that arise from the extensions.

并且为了更进一步地创建插件，Erik Mikkelson还已经创建全套的测试工具，它会显示扩展所会产生的输出、错误和事件。

youdao

Jim and Irene Mikkelson were visiting Washington from Charlotte,North Carolina when they stopped by the museum.

VOA: special.2009.12.01

Mister Mikkelson called the exhibit educational.

VOA: special.2009.12.01

"It is really difficult to track some of those down when all you have is a purported e-mail from somebody named Janet, and no other identifying information, " David Mikkelson said.

CNN: AP photo

In addition to chasing the money trail, uncovering the original source and motives of out-there conspiracies and hoaxes online is always difficult, said David Mikkelson, co-founder of the debunking site Snopes.com.

WSJ: Hoaxes, scams abound after disasters like Boston

It took weeks, Mikkelson said, for a European tourist to come forward as the creator of doctored photos of a man on a balcony of one of the World Trade Center towers with a plane bearing down.

WSJ: Hoaxes, scams abound after disasters like Boston