Whether it was two days, a month, or a year that the cloud remained above the tabernacle, the children of Israel would remain encamped and not journey; but when it was taken up, they would journey."
Numbers 9:21-22 (NKJV)
There are some businesses and government organizations that function as think tanks. A think tank is defined as a group of people who come together to study a particular thing to provide information, ideas, and advice to others about that topic. Something similar to this is what people call brain storming, where people discuss something to come up with ideas and solutions concerning that thing. Think tanks and brainstorming can be very helpful in some, but not all, situations.
The Old Testament gives us examples of how God led His people. These examples can help us understand how God leads us today by the Holy Spirit. When Israel traveled to the Promised Land, they had the pillar of cloud in the daytime and the pillar of fire at night. When the pillar moved, it showed Israel that it was time for them to move, and when the pillar stayed in one place, the people did not move. No matter when the pillar of cloud moved, Israel had to follow it to be sure they were following God's direction.
Only God knew when the pillar would move. Israel could have formed a think tank or done some brainstorming to try and figure out why the pillar of cloud moved the way it did, but that would not have worked. Today, believers sometimes try to figure out what God wants them to do based on their circumstances, by positive and negative aspects of things, or by getting other people's opinions. We need to allow God to lead and direct us by the Holy Spirit, without trying to reason it out. We may not always completely understand God's plan, but we certainly won't be able to just figure it out in our mind either.