WOTC - Two ministers to run a ministry

I asked this question in the Wisdom of the Crowd:

Why two ministers run a ministry and a minister run two ministries?

Here are the responses: (46 Votes)

83 % - It is a wasteful way to run a government
13 % - This allows the ministers to have more exposure to two ministries.
4 % - PM Lee does not trust a single minister to run a ministry
0 % - This shows that the ministers deserve their high salary.

See the pie chart at: 
http://www.wisdomofthecrowd.sg/chart.aspx?ID=1174