On the next screen, you should see a list of the Mojang games registered to your account. Find the Minecraft row in this list, then find your username to the right. Click Change next to your username to proceed.
Parallel thinking is defined as a thinking process where focus is split in specific directions. When done in a group it effectively avoids the consequences of the adversarial approach (as used in courts). In adversarial debate, the objective is to prove or disprove statements put forward by the parties (normally two).
What is linear thinking? A very good description can be found at this website: To continue to look at something from one point of view. To take information or observations from one situation, place this data in another situation (usually later), and make a conclusion in the later situation.